-
A can finish a work in 7 days. B can finish the same work in 9 days. The number days required to finish the same work by both of them together is
-
-
1 15 16 -
2 15 16 -
3 15 16 -
4 15 16
-
Correct Option: C
| A’s 1 day’s work = | 7 |
| B’s 1 day’s work = | 9 |
∴ (A + B)’s 1 day’s work
| = | + | |||
| 7 | 9 |
| = | = | = 3 | days | |||
| 468 | 13 | 13 |
| ∴ Required time = | days | 16 |
| = 3 | days | 16 |
