Question

7. 15 men can do a piece of work in 36 hours. How many men will be required to finish the work in
20 hours?
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Answer 1

Answer:

27 men

Step-by-step explanation:

If 'a' men can do a piece of work in 'h' hours, then 'b' men can do the same piece of work in 'ah/b' hours.

Here,

a = 15

h = 36

We have to find b.

Given that,

$\frac{ah}{b}=20 \\ \\ \\ \frac{15 \times 36}{b}=20 \\ \\ \\ a=\frac{15 \times 36}{20} \\ \\ \\ b=27$

Hence,  

27 men are needed to finish the work in 20 hours.

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Answer 2

Answer:

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