Ravi can complete a task in 6 days and Mohan can complete the same task in 9 days. In how many days can Ravi and Mohan together complete the same task?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e 
days.
| Understanding/Application |
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Let the total work be x. Ravi complete work in 6 days. Work done by Ravi in 1 day = x/6 Mohan complete work in 9 days. Work done by Mohan in 1 day = x/9 Work done by Ravi and Mohan in 1 day together = x/6 + x/9 = 5x/18 |
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Number of days in which Ravi and Mohan will complete the work = x/5x/18 = 18/5 = 3(3/5) days |