Question

111. The averag If 15 workers can build a wall in 90 hours. How many workers will be required to do the same work in 30 hours?

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Answer 1

45 workers

Explanation:

(15 workers * 90 hrs) / 1 wall = 1350 worker-hours per wall

1350 worker - hours / 30 hours = 45 workers

Answer 2

45 workers.

Step-by-step explanation

In 90 hours 15 workers will build one wall

So in 90 hours it w1ll take 1 worker to build 1/15 of a wall.

In 30 hours he would build 1/45 of a wall.

So to build the whole wall in 30 days it will take 45 workers.