Question

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

Answer 1

Answer:

350

Step-by-step explanation:

630 : 14

x : 9

This is inversely proportional as more workers will take less time to finish a project.

To get from 14 to 9, we multiply $\frac{9}{14}$

So, we multiply the amount of workers by $\frac{14}{9}$

630 *  $\frac{14}{9}$ = 980

So the contractor hired 980 - 630 workers

= 350

The contractor hired 980 workers, or hired 350 more workers

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Answer 2

Answer:

350

Step-by-step explanation:

630 : 14

x : 9

This is inversely proportional as more workers will take less time to finish a project.

To get from 14 to 9, we multiply  

So, we multiply the amount of workers by  

630 *   = 980

So the contractor hired 980 - 630 workers

= 350

The contractor hired 980 workers, or hired 350 more workers

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