Problema Solution
Suppose that the time it takes to shovel snow from a driveway varies directly with the area of the driveway and inversely with the square root of the number of workers. If it takes 4 workers 45 minutes to shovel an area of 450ft^2, how long will it take 3 workers to shovel an area of 500ft^2? Round answer to the nearest tenth of a minute
Answer provided by our tutors
let 'x' represent the time 3 workers need to shovel an area of 500ft^2:
(45/450)* square root of 4 = (x/500)* square root of 3
by solving we find:
x = 57.7 min
click here to see the step by step solution of the equation:
3 workers will need 57.7 minutes to shovel an area of 500ft^2.