If 20 men working 8 hours per day can complete a piece of work in 21 days. How many hours per day
must 48 men work to complete the same job in 7 days?
15
UX010142
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10
Answers
Answered by
1
Answer:
10
Step-by-step explanation:
The number of men and the time taken to complete the same work are inversely proportional. In inverse proportion, the product remains constant.
Let the number of hours per day be h.
=> 20 × 8 × 21 = 48 × h × 7
=> h = 10
Therefore, they should work for 10 hours per day to complete the same job in 7 days.
Answered by
1
Answer:
10 hrs per day
Step-by-step explanation:
20 men finish works in = 21 days
48 men finish works in = (21 × 20) / 48 = 35/4 days
Now,
Their 8 hrs work finish in = 35/4 days
Their 1 hr work finish in = 35/4 × 8 = 70 days
Their 10 hr work finish in = 70/10 = 7 days
So,, they have to work for 10 hrs per day
Hope it helped!
Thank you
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