Question

A contractor with a work force of 420 men can complete a work of construction of a building in nine months. due to request by the owners he was asked to complete the job in seven months how many extra men he must employ to complete the job?​

Answer 1

Answer:

he needs 540 workers

Step-by-step explanation:

i hope it helps

Answer 2

Answer=540 workers

Explanation

7×x=420×9

x=420×9/7

x=60×9

x=540

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