A and B can finish a task in 7 days and 8 days, respectively. If they work on alternate days, in how many days will the work be completed when A starts?
A
56/6 days
B
37/4 days
C
52/7 days
D
None of these
Correct Option:
C
Explanation
In every two days, A and B complete 1/7 + 1/8 = 15/56 of the work. After 6 days, they complete 45/56, leaving 11/56. A works next and completes 8/56, leaving 3/56. B completes that in 3/7 day. Total = 7 3/7 = 52/7 days.
