Question

15. A workforce of 210 men with a supervisor can finish a certain piece of work in 5 months.

How many extra men must he employ if he want to complete job in just 2 months?​

Answer 1

Step-by-step explanation:

210×5=X×2

105×5=X

X=525

extra men needed=525-219=315

hope it helps

Answer 2

Answer:

The number of men required extra = 315

Step-by-step explanation:

Given data

210 men can finish a certain piece of work in 5 months

here we need to find how many extra men need to complete the same work in just 2 months

let x  be the number of  men required to complete the work in 2 months

⇒ number of men(a)                        210                       x

⇒ number of months (b)                    5                        2

here the number of men is inversely proportional to number of months

    ⇒           a₁ b₁ =  a₂ b₂

    ⇒         210(5) = x × 2

    ⇒            x = 210(5) / 2

                      = 105(5) = 525

the number of men required to complete the work in 2 months = 525

the number of men required extra = 525 - 210 = 315