1141 . A school had 100 students aged 20years on an average. At the of the year 20 students aged 22 years on an average left and 25 students of 18 years on an average joined the school. What is the average age of the present students of the school?

A. 20.1
B. 18
C. 20
D. 22

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

📢 BdMerit অ্যাপে সরকারি চাকরি না হলে সম্পূর্ণ টাকা ফেরত!

BdMerit-এর ১ বছরের প্রিমিয়াম প্যাকেজ কিনে ১০ মাস নিয়মিত প্রস্তুতি নিন—

এর মধ্যে চাকরি না হলে- 🎁 BdMerit দিবে ১০০% ক্যাশব্যাক!

🚀 আজই ডাউনলোড করুন bdMerit-এর অ্যাপ▶️ এবং আপনার সাফল্যের পথ সুগম করুন!

1142 . A school has 10 classes with the same number of students in each class. One day, the weather was bad and many students were absent. 3 classes were half full. 5 classes were 3/4 full and 2 classes were 1/6 empty. A total of 74 students were absent. What is the total number of students in this school?

A. 200
B. 220
C. 240
D. 400
E. None of these

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Let x = number of students in each class.

Then total number of students in school. is = 10x

If 3 classes are half full then we have 3x/2 students absent.

If 5 classes are 3/4 full that means that (1/4)*5x students are absent.

If 2 classes are 1/6 empty that means that (1/6)*2x students are absent.

Now we are told that

(3x/2) + (1/4)*5x + (1/6)*2x = 74

or,(3x/2) + (5x/4) + (x/3) = 74

or,18x + 15x + 4x = 888

or,7x = 280

x = 24

number of students in each class is 24

number of student in this school = 10x

= 10*24 = 240

ans: 240

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

দুর্নীতি দমন কমিশনের সহকারী পরিচালক-১২.০৪.২০১৩

A. 200
B. 220
C. 250
D. 400
E. None of these

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

Circumference of the circular path = 2/\50 = 100 /\ m

This means 100 /\ m is the distance covered in 60 minutes

Therefore distance covered in 15 minutes = 1/4 x 100 /\ m = 25/\ m

Now distance covered in one revolution of the wheel = 2 /\(1/2) m = /\ m

Therefore number of revolutions in 15 minutes = 25/\ //\ = 25

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

1144 . A school has only 3 classes having 20, 30 and 40 students respectively. The percentages of students passed are 30%. 50% and 60% respectively. Find the percentage of passed students of the entire school.

A. 40
B. 50
C. 60
D. 30

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

To find the percentage of passed students in the entire school, you can calculate the weighted average of the percentages based on the number of students in each class.

Here's how you can do it:

Calculate the total number of students in the school:

Total students = 20 + 30 + 40 = 90

Calculate the total number of students who passed in each class:

In the first class, 30% of 20 students passed: 0.30 * 20 = 6 students passed.
In the second class, 50% of 30 students passed: 0.50 * 30 = 15 students passed.
In the third class, 60% of 40 students passed: 0.60 * 40 = 24 students passed.

Calculate the total number of students who passed in the entire school:

Total passed students = 6 + 15 + 24 = 45

Calculate the percentage of passed students in the entire school:

Percentage passed = (Total passed students / Total students) * 100 Percentage passed = (45 / 90) * 100 Percentage passed = 0.5 * 100 Percentage passed = 50%

So, the percentage of passed students in the entire school is 50%.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

সমন্বিত ৭ ব্যাংক || সিনিয়র অফিসার-05-11-2021 ||

A. 35
B. 40
C. 45
D. 50

View Answer	Favorite Question	Report

Answer: Option D

Explanation:

To find the percentage of passed students in the entire school, you can calculate the weighted average of the percentages based on the number of students in each class.

Here's how you can do it:

Calculate the total number of students in the school:
Total students = 20 + 30 + 40 = 90

Calculate the total number of students who passed in each class:
In the first class, 30% of 20 students passed: 0.30 * 20 = 6 students passed.
In the second class, 50% of 30 students passed: 0.50 * 30 = 15 students passed.
In the third class, 60% of 40 students passed: 0.60 * 40 = 24 students passed.
Calculate the total number of students who passed in the entire school:
Total passed students = 6 + 15 + 24 = 45

Calculate the percentage of passed students in the entire school:
Percentage passed = (Total passed students / Total students) * 100 Percentage passed = (45 / 90) * 100 Percentage passed = 0.5 * 100 Percentage passed = 50%

So, the percentage of passed students in the entire school is 50%.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

সমন্বিত ৭ ব্যাংক || অফিসার (ক্যাশ) (24-05-2024)

A. Tk 25
B. Tk 30
C. Tk 40
D. Tk 50
E. Tk 60

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

Let Total people = 100

60% people of total people = 60

They donate amount = 60×60 = 3600

Remaining people = 100 - 60 = 40

And remaining amount = ( 3600×100) 75 - 3600 = 4800 - 3600 = 1200

They donate per person = 1200/40 = 30Tk.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

1147 . A scored 30% marks and failed by 15 marks. B scored 40% marks and obtained 35 marks more than those required to pass. The pass percentage is-

A. 33%
B. 38%
C. 43%
D. 46%

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

Janata Bank PLC || Officer (Rural Credit) (27-10-2023) || 2023

A. Tk 450
B. Tk 480
C. Tk 500
D. None of these

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Hints:

25% লাভে

ক্রয়মূল্য ১০০ টাকা হলে বিক্রয়মূল্য ১২৫ টাকা

ক্রয়মূল্য ৩৮০ টাকা হলে বিক্রয়মূল্য (১২৫× ৩৮০)/১০০ টাকা = ৪৭৫ টাকা

আবার, ৫% ডিসকাউন্ট এ,

বিক্রয়মূল্য ৯৫ টাকা হলে তালিকা মূল্য ১০০ টাকা

বিক্রমূল্য ৪৭৫ টাকা হলে তালিকা মূল্য (৪৭৫× ১০০)/৯৫ = ৫০০ টাকা

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

1149 . A seller made 10% profit after selling a product at 20% commision on list price. What is the list price of that product?

A. 137.5 Tk
B. 237.5 Tk
C. 347.5 Tk
D. 97 Tk

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

list price = 100* (100+10)/(100-20)

= 100*(110/80)

= 275/2

= 137.5

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

1150 . A seller marks his goods 30% above their cost price but allows 15% discount for cash payment . His percentage of profit when sold in cash is -

A. 15%
B. 9%
C. 10.5%
D. 8.5%

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

জনতা ও রূপালী ব্যাংক- অফিসার ১৩.১২.২০১৯

A. 472
B. 476
C. 528
D. 532

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Sells price of A = Cost price of B

Sells price of B = cost price of c

For, A

when Cost price 100 then sells price 120 tk

when cost price 1 then sells price 120/100 tk

when cost price 400 then sells price = (120×400)/100 = 480Tk.

For, B

when cost price 100 then sells price 110 Tk.

when cost price 480 then sells price = ( 110×480)/100 = 528Tk.

So, C will pay B Tk. 528

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

পল্লী কর্ম সহায়ক ফাউন্ডেশনের অ্যাসিসট্যান্ট ম্যানেজার-০৭.০৩.২০১৪

A. Tk. 472
B. Tk. 476
C. Tk. 528
D. Tk. 532

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

At 20% profit A sold the article to B at (400+ 400*20/100)= 480 tk.

At 10% profit B then sold it to C at (480+ 480*10/100)=528 tk

so, C pays tk 528 to B.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

পূবালী ব্যাংক লিমিটেড || সিনিয়র অফিসার (30-09-2023) || 2023

A. 12.5
B. 8.5
C. 16.66
D. 15.2

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

Standard Bank Plc || Trainee Assistant Officer (15-03-2025) || 2025

A. 2%
B. 2.5%
C. 20%
D. 25%

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

12.5 - 10/12.50

= 25/125 × 100%

= 20% (ans)

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

1155 . A shirt marked Tk.12.50 is sold at Tk.10.00. The rate of discount on the marked price is--

A. 2%
B. 2.5%
C. 20%
D. 25%

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

12.5 - 10/12.50

= 25/125 × 100%

= 20% (ans)

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

1141 . A school had 100 students aged 20years on an average. At the of the year 20 students aged 22 years on an average left and 25 students of 18 years on an average joined the school. What is the average age of the present students of the school?

BdMerit-এর ১ বছরের প্রিমিয়াম প্যাকেজ কিনে ১০ মাস নিয়মিত প্রস্তুতি নিন—

এর মধ্যে চাকরি না হলে- 🎁 BdMerit দিবে ১০০% ক্যাশব্যাক!

🚀 আজই ডাউনলোড করুন bdMerit-এর অ্যাপ▶️ এবং আপনার সাফল্যের পথ সুগম করুন!

1144 . A school has only 3 classes having 20, 30 and 40 students respectively. The percentages of students passed are 30%. 50% and 60% respectively. Find the percentage of passed students of the entire school.

1145 . A school has only the classes having 20, 30 and 40 students respectively. The percentages of students passed are 30%, 50% and 60% respectively. The percentage of passed students in the entire school is-

1147 . A scored 30% marks and failed by 15 marks. B scored 40% marks and obtained 35 marks more than those required to pass. The pass percentage is-

1148 . A seller gave 5% discount on the tag price of a book and made a profit of 25% on cost. If the cost of the book was Tk. 380, what was the tag price?

1149 . A seller made 10% profit after selling a product at 20% commision on list price. What is the list price of that product?

1150 . A seller marks his goods 30% above their cost price but allows 15% discount for cash payment . His percentage of profit when sold in cash is -

1151 . A sells an article which cost him Tk. 400 to B at a profit of 20%. B then sells it to C,making a profit of 10% on the price he paid to A. How much does C pay B?

1152 . A sells an article which costs him Tk. 400 to B at a profit of 20%. B then sells it to C, making a profit of 10% on the price he paid to A. How much does C pay to B?

1153 . A set has exactly five consecutive positive integers starting with 1. What is the percentage decrease in the average of the numbers when the greatest one of the numbers is removed from the set?

1154 . A shirt marked TK. 12.50 is sold at TK. 10.00. The rate of discount on the marked price is -

1155 . A shirt marked Tk.12.50 is sold at Tk.10.00. The rate of discount on the marked price is--

কোর্স ক্যাটাগরি

প্রয়োজনীয় লিঙ্ক