Question

7 men complete a work in 10 days .how many men complete the same work in 5 days?

Answer 1

GIVEN :-

7 men complete a work in 10 days .

TO FIND :-

Number of men can complete the same work in 5 days.

SOLUTION :-

Now,

7 men completes a work in 10 days

1 men takes more time than 7 men so, a unique unitary method shall be used here. [INVERSLY PROPORTIONAL RULE]

7men = 10days

1 men = 70days

In five days, the no. of men required is -

70 × 1/5 = 14 men.

ALTER :-

Using Inversly Propertional rule

10 days taken by 7 men

5 days taken by ?

7/10 = 14/5

Here we can find that they are not equivalent but they follow rule of inversely proportion .