Problema Solution
It takes 7.4 hours for 18 people to install new floors. How many hours will it take 12 people to install the same floors?
Answer provided by our tutors
let 'x' represent the number of hours that 12 people need to install the same floor
since the number of hours is inversely proportional with the number of workers we can write
7.4*18 = x*12
by solving we find:
x = 11.1 hr
click here to see the step by step solution of the equation:
12 people will need 11.1 hr or 11 hr 6 min to install the same floor.