Question

A can do a work in 6 days and B in 9 days. How many days will both take together to complete the work?

• A. 7.5 days
• B. 5.4 days
• C. 3.6 days
• D. 3 days

Answer 1

Answer:

C. 3.6 days

A's 1 day work = 1/6 B's 1 day work = 1/9 If both work together, their 1 day work, = (1/6)+(1/9) = 5/18 Total days to be taken by both A and B together to complete the work = 18/5 days = 3.6 days.