Question

12 men can do a work in 20 days, how many man would do it in 15 days
with process and language

Answer 1

Answer:

25 men will do work in 15 days.

Step-by-step explanation:

12 men do work in 20 days

∴ 1 men will do work in $\frac{20}{12}$ days

∴ in 15 days = 15 × $\frac{20}{12}$

= 5 × $\frac{20}{4}$

= 5 × 5

= 25

∴ 25 men will do work in 15 days.

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Answer 2

Answer:

16 men

Step-by-step explanation:

Let the number of man be x

Clearly, as the number of days decreases, the number of men increases.

So, it is a case of inverse variation.

Hence,

12 × 20 = x × 15

=> x = (12 × 20)/15

=> x = 240/15

=> x = 16

Hence, in 16 men will do the same work in 20 days.

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