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A can do 1/6 of a work in 5 days and B can do 2/5 of the work in 8 days. In how many days, can both A and B together do the work?
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- 12 days
- 13 days
- 15 days
- 20 days
Correct Option: A
Using basics of Rule 2,
Time taken by A to finish the work = 5 × 6 = 30 days
Time taken by B to complete the work
| = | = 20 days | 2 |
∴ (A + B)'s 1 day’s work
| = | + | = | = | |||||
| 30 | 20 | 60 | 12 |
∴ Required time = 12 days
