1. Tardigrade
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  4. Twelve men can do a piece of work in 15 days. How many men are required to complete a work which is three and a half times the original work in 10 days?

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Q. Twelve men can do a piece of work in 15 days. How many men are required to complete a work which is three and a half times the original work in 10 days?

Time and Work, Pipes and Cisterns

Solution:

Use the concept of variation.