Ravi, Mohan and Govind can complete a task in 12 days, 10 days and 15 days, respectively. In how many days can Ravi, Mohan and Govind together complete the same task?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e 4.
| Understanding/Application |
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When Ram, Mohan, and Govind can do a work in x, y, and z days respectively. Then, the three of them together can finish the work in xyz/(xy + yz + xz) days |
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Therefore, the No. of days taken by them together to finish the whole work = (12 × 15 × 10)/(12 × 15 + 15 × 10 + 12 × 10) = (12 × 15 × 10)/450 = 180/45 = 4 days |