A certain number of people can finish a piece of work in 70 days. if there are 20 men less , it would take 10 days more for the same work to be finished . how many workers were there in starting .
Answers
Answered by
1
x men can finish the work in 70 days
1 man can do it in 70/x days
x-20 men can finish it in 70/x *80
x-20 = 70/x*80
x(x-20)= 70*80
x^2-20x=5600
x^2-20x-5600
now u can solve this quadratic ....
1 man can do it in 70/x days
x-20 men can finish it in 70/x *80
x-20 = 70/x*80
x(x-20)= 70*80
x^2-20x=5600
x^2-20x-5600
now u can solve this quadratic ....
Answered by
4
suppose x number of people can can complete work in 70 days . according to question x-20=8o
x=80+20
x=100
so there were 100 people in starting
plzzzzz mark me as a brainist
x=80+20
x=100
so there were 100 people in starting
plzzzzz mark me as a brainist
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