Question

8 people take 10 hours to paint a house. how long will it take 4 people to do the same job? please give me full formula of answer

Answer 1

If 8 people take ten hours, then half the number of people will take double the time, i.e. 20 hours

Answer 2

it is a case of indirect variation

8/10=4/x
10*8=80
4*x. =80
x. =80/4
=20 hrs