Question

5 man takes 20 days to complete a piece of work, working 8 hours a day. In how many days can 8 men do the same work working 7 hours a day. *​

Answer 1

Answer:

answer is 10

Step-by-step explanation:

5 men working 8hrs. took =20 days

1 man working 1 hr. will take= 20*5*8 days

Then, 8 men working 10 hrs. will take= (  20*5*8 )/8∗10=10days.

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Answer 2

Answer:

100/7 days or 14.28 days

Step-by-step explanation:

there is a SIMPLE FORMULA FOR THIS KIND OF Questions,

W1 = W2

m1h1d1 = m2h2d2

m1 means 1st condition person ,

same as m2 2nd condition.

5*8*20 = 8 * 7 * d2

800= 56*d2

800/56 = d2

d2 = 100/7 days or 14.28 days