Question

if 15 men can paint school in 7 days how many more men are required to complete the same in 3 days​

Answer 1

Answer:

The ans is 12

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Answer 2

Answer:

No. of men is inversely proportional to number of days.

We know, if x is inversely proportional to y,

x1 y1 = x2 y2

Here, x1=15 men, y1=7 days, x2= 'x' men, y2=3 days

Applying the formula,

15 * 7 = x * 3

Or x = 5 * 7 = 35 men

Therefore, number of more men = 35-15 = 20 more men.