Question

working for 8 hours daily 40 people can dig the foundation of a building in 21 days working for 10 hours daily if he work is to be finished in 14 days how many people are need to do the same work.

Answer 1

Hlo mate :-

Solution :-
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● 8 hours, 21 days = 8 * 21 = 168 hrs

●10 hrs, 14 days = 10 * 14 = 140 hrs

●Let people be x and hours be y.
If number of people increase number of hours decrease - inverse proportion.

xy = k
40 * 168 = 140k
672 = 140k
k = 672/140 = 48 people

Therefore, we need 48 people. hope this helped!

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Answer 2

here is your answer OK dude ☺☺☺

8 hours, 21 days = 8 * 21 = 168 hrs
10 hrs, 14 days = 10 * 14 = 140 hrs

Let people be x and hours be y.
If number of people increase number of hours decrease - inverse proportion.

xy = k
40 * 168 = 140k
672 = 140k
k = 672/140 = 48 people

Therefore, we need 48 people. hope this helped! :)