-
A can do a piece of work in 8 days which B can destroy in 3 days. A has worked for 6 days, during the last 2 of which B has been destroying; how many days must A now work alone to complete the work ?
-
- 7 days
-
7 1 days 3 -
7 2 days 3 - 8 days
Correct Option: B
Work done by A in 6 days
| = | = | part | ||
| 8 | 4 |
Work destroyed by B in 2 days
| = | part | 3 |
Remaining work after destruction
| = | - | = | = | |||||
| 4 | 3 | 12 | 12 |
Now, time taken by A in doing
| = | part | 12 |
| = | × 8 = | = 7 | days | |||
| 12 | 3 | 3 |
