A can do a work in 6 days and B in 9 days. How many days will both take together to complete the work?
A7.5 days
B5.4 days
C3.6 days
D3 days
Answer:
C. 3.6 days
Read Explanation:
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.