A and B together can do a certain work in x days. Working alone, A and B can do the same work in (x + 8) and (x + 18) days respectively. A and B together will complete 5/6 of the same work in:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 10 days
|
Understanding |
Application |
|
A and B together can do a certain work in x days. Working alone, A and B can do the same work in (x + 8) and (x + 18) days respectively. |
So, Time in which A and B together can do a certain work = x = √(8 × 18) = √144 = 12 days |
|
|
Hence, A and B together will complete 5/6 of the same work in: 5/6 × 12 = 10 days |