Question

20 persons can do a piece of work in 7 days, then the number of persons required to complete the work in 28 days is ________.

Answer 1

Answer:

560

Step-by-step explanation:

20 x 28 Thats it!!

Answer 2

Step-by-step explanation:

If A can do a piece of work in x days then A's one days work is x1

Hence 20 people can do a piece of work in 7 days

20 people's one days work is 71 

1 persons 1  days work is 7×201=1401

Therefore 1 person can do a piece of work in 140 days

In 28 days28140=5 people can work

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