1 . Tow workers A and B are engaged to do a work. A working alone takes 8 hours more to complete the job than if both worked together. If B worked along, he would need 4.5 hours more to complete the job than they both working together. What time would they take to do the work together?

• A. 4 hours
• B. 5 hours
• C. 6 hours
• D. 7 hours

Answer: Option C

Explanation: