Question 31

The efficiency of work of P and Q are in the ratio 5 : 7. What will be the ratio of number of days taken by them to finish the work?

Solution

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We know that efficiency ∝$$\frac{1}{no. Of working days}$$

Given that efficiency of work P and Q are in the ratio of 5 : 7

∴ Ratio of number of days taken by them to finish the work = 7 : 5

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