Question

if 45 men can complete a work in 15 days if 30 more men joined them how many days will be they take to complete the work please give correct answer in helping

Answer 1

Heya !!!

This is your answer.

Given :-
45 men can complete a work in 15 days.

If 30 more men joined, how many days will it take to complete the work.

If 30 more men joined then total number of men will be ....
45+30 = 75 men..

We know that more the men will be, lesser it will take to complete or lesser than the men, more time it will take.

So this is a case of inverse Proportion.

In inverse proportion...
x1×y1 = x2×y2
45 × 15 = 75 × y2
y2 = 675/75
y2 = 9.

Hence if 30 more men join then it will take 9 days to complete the work.

Hope it helps