Question

A contractor who had a work force of 630 person, undertook to complete a portion of a stadium in 14 months. He was asked to complete the job in 9 months. How many extra person had he to employ?​

Answer 1

$\large{Solution}$

★Answer

350 extra person had to be employed

★Step by step explanation

No. of people complete a portion of stadium in 14 months = 630

so,

Let no. of people required to complete the whole stadium job in 9 months = X

ATQ, (on inverse proportion)

A1/A2 = B2/B1

9/14 = 630/X

9x = 630×14

x = 630×14/9

x = 980

therefore,

extra person needed are:

= 980-630

= 350