2866 . Salma Average in 4 test in 80% what marks dose she needs to score in her fifth test to marks her avetage 84%

A. 100%
B. 94%
C. 84%
D. 96%

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Answer: Option A

Explanation:

the sum of the first 4 test scores is 4*80 = 320

the sum of ALL 5 scores to be 5*84 = 420

she need score in her fifth test = 420 - 320 = 100

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2867 . Sam can mow a lawn in 20 min, while mark takes 10 min longer to longer to mow the same lawn. How long will they take to mow the lawn if they work together?

A. 12 min
B. 14 min
C. 15 min
D. more than 15 min

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Answer: Option A

Explanation:

sam এর সময় লাগে 20 মিনিট

Mark এর সময় লাগে = ( 20 + 10) = 30 মিনিট

Sam ও Markএকত্রে কাজ করলে সময় লাগে ( 20 × 30) /( 20 + 30) মিনিট = 600/50 = 12 মিনিট।

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2868 . Sam ranked ninth from the top and thirty-eight from the bottom in a class. How many students are there in the class?

A. 45
B. 47
C. 46
D. 48

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Answer: Option C

Explanation:

Hints:

9 + 38 - 1 = 46

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উত্তরা ব্যাংক | অ্যাসিস্ট্যান্ট অফিসার | 23-07-2022

A. 3.5%
B. 4%
C. 4.5%
D. 5.6%
E. None of these

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Answer: Option D

Explanation:

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2870 . Saplings are to be planted 30 feet apart along one side of a straight lane 455 feet long. If the first sapling is to be planted at one end of the lane, how many saplings are needed?

A. 13
B. 14
C. 15
D. 16

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Answer: Option D

Explanation:

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2871 . Sarah needs to make a cake and some coolies. The cake requires 3/8 cup of sugar and the coolies require 3/5 cup of sugar. Sarah has 15/16 cups of sugar. Does she have enough sugar, or how much more does she need?

A. has enough sugar
B. needs 1/8 of a cup of sugar
C. needs 3/80 of a cup of sugar
D. needs 6/19 of a cup of sugar
E. None of these

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Answer: Option C

Explanation:

Sugar required = 3/8 + 3/5 = (15 + 24) / 40 = 39/40 cup

Shortage of sugar = 39/40 - 15/16 = (78 - 75)/80 = 3/80 cup

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2872 . Saurabh has purchased a square sheet of plywood 196 square feet area. To cover a wall he must cut off 3 feet from a side. What is the area in square feet of the wall?

A. 154
B. 144
C. 169
D. 168

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Answer: Option A

Explanation:

Side of the plywood = √169 = 13 feet

Cutting of 2 feet from a side will make it a rectangular sheet with a length of 13 feet and a width of 11 feet. Area of the wall is equal to the area of this sheet.

So, the area of the wall = 13 x 11 = 143 sq ft

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2873 . Seats for Mathematics, Physics and Biology in a university are in the ratio 5: 7: 8, There is a proposal to increase these seats by 40% , 50% and 75% respectively. what will be ratio of increased seats?

A. 2: 3: 4
B. 6: 7: 8
C. 6: 8: 9
D. Remain the same
E. None of these

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Answer: Option A

Explanation:

Let, the number of seats for Math, physics, and biology, be 5x, 7x and 8x respectively

Number of increased seats are ( 140% of 5x).

(150% of 7x) ( 175% of 8x)

= (140/100×5x) , ( 150/100×7x), ( 175/100×8x)

7x, 21x/2, 14x

The required ratio = 7x : 21x/2 : 14x

= 14x : 21x : 28x

= 2 : 3 : 4

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2874 . Sellling 12 pen at a price of Tk 10 yields a loss of a% Selling 12 pen at a price of Tk 12 yields a profit of a%. What is the value of a?

A. 10
B. 11
C. 100/11
D. 11/100

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Answer: Option C

Explanation:

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2875 . Set X contains 10 consecutive integers. If the sum of the 5 smallest members of set X is 265, what is the average of the 5 largest members of Set X?

A. 58
B. 59
C. 60
D. 57
E. None of these

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Answer: Option A

Explanation:

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2876 . Seven friends are having lunch together in a fast food shop. Each of them east at least 3/5th of a pizza. What is the smallest number of whole pizzas needed for their lunch?

A. 7
B. 5
C. 6
D. 28
E. None of these

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Answer: Option B

Explanation:

There are 7 person for lunch

One person eats 3/5 of a pizza

So 7 person eats = 3/5*7 = 21/5

= 4.2 pizzas

so, the smallest no. of whole pizzas is 5

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2877 . Shahin has purchased a square sheet of plywood of 169 square feet area. To cover a wall he must cut off two feet from a side. What is the area, in square feet of the wall?

A. 117
B. 121
C. 143
D. 141

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Answer: Option C

Explanation:

Side of the plywood = √169 = 13 feet

Cutting of 2 feet from a side will make it a rectangular sheet with a length of 13 feet and a width of 11 feet. Area of the wall is equal to the area of this sheet.

So, the area of the wall = 13 x 11 = 143 sq ft

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2878 . Shanto was asked to find the value of 7/12 of a sum of money.Instead of multiplying the same by 7/12, he divided it by 7/12 and his answer exceeded the correct answer by 95. The correct answer is

A. 48
B. 89
C. 84
D. 69
E. 49

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Answer: Option E

Explanation:

Let , Money = x

x/(7/12) - x * (7/12) = 95

x* 12/7 - 7x / 12 = 95

( 12x * 12 - 7x * 7 ) / 84 = 95

95x = 95 * 84

x = 84

84 * 7/12 = 49

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Bangladesh Bank - Assistant Director - 2010

A. 32°C
B. 36.5°C
C. 37.5° C
D. 38.2°C

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Answer: Option D

Explanation:

আমরা জানি,
ফারেনহাইট ও সেলসিয়াস স্কেলের মধ্যে সম্পর্ক -
C5=F−329�5=�-329
⇒ C5=100.7−329⇒ �5=100.7-329
⇒ C5=68.79⇒ �5=68.79
⇒ C=38.166⇒ �=38.166
⇒ C= 38.2°C

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সমন্বিত ৪ ব্যাংক - সহকারী প্রোগ্রামার - 25.09.2020

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

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Answer: Option C

Explanation:

We know,
Total = N(A) + N(B) - N(A∩B) + None.
⇒ 420 = 200 + 270 - N(A∩B) + 0
⇒ N(A∩B) = 470 - 420
⸫ N(A∩B) = 50

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Assistant Director (General) 06.07.18

2866 . Salma Average in 4 test in 80% what marks dose she needs to score in her fifth test to marks her avetage 84%

2867 . Sam can mow a lawn in 20 min, while mark takes 10 min longer to longer to mow the same lawn. How long will they take to mow the lawn if they work together?

2868 . Sam ranked ninth from the top and thirty-eight from the bottom in a class. How many students are there in the class?

2869 . Samad purchased 20 dozens of toys at the rate of TK. 375 per dozen. He sold each one of them at the rate of TK.33. What was his percentage profit?

2870 . Saplings are to be planted 30 feet apart along one side of a straight lane 455 feet long. If the first sapling is to be planted at one end of the lane, how many saplings are needed?

2871 . Sarah needs to make a cake and some coolies. The cake requires 3/8 cup of sugar and the coolies require 3/5 cup of sugar. Sarah has 15/16 cups of sugar. Does she have enough sugar, or how much more does she need?

2872 . Saurabh has purchased a square sheet of plywood 196 square feet area. To cover a wall he must cut off 3 feet from a side. What is the area in square feet of the wall?

2873 . Seats for Mathematics, Physics and Biology in a university are in the ratio 5: 7: 8, There is a proposal to increase these seats by 40% , 50% and 75% respectively. what will be ratio of increased seats?

2874 . Sellling 12 pen at a price of Tk 10 yields a loss of a% Selling 12 pen at a price of Tk 12 yields a profit of a%. What is the value of a?

2875 . Set X contains 10 consecutive integers. If the sum of the 5 smallest members of set X is 265, what is the average of the 5 largest members of Set X?

2876 . Seven friends are having lunch together in a fast food shop. Each of them east at least 3/5th of a pizza. What is the smallest number of whole pizzas needed for their lunch?

2877 . Shahin has purchased a square sheet of plywood of 169 square feet area. To cover a wall he must cut off two feet from a side. What is the area, in square feet of the wall?

2878 . Shanto was asked to find the value of 7/12 of a sum of money.Instead of multiplying the same by 7/12, he divided it by 7/12 and his answer exceeded the correct answer by 95. The correct answer is

2879 . Shehnaz has to record temperature of a covid-19 patient in Celsius but hard thermometer reads Fahrenheit. The patient's temperature is 100.7° Fahrenheit. What is the temperature in Celsius?

2880 . Shonghoti and Shouhardo Clubs consist of 200 and 270 members respectively. If the total member of the two clubs is 420 then how many members belong to both clubs?

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