Problema Solution
Tom washes a car in 8 min.bill washes a car in 6 min.how long will it take them to wash the car together.
Answer provided by our tutors
let
the rate of Tom is 1 car in 8 min that is 1/8 cars/min
the rate of Bill is 1 car in 6 min that is 1/6 cars/min
the rate of Tom and Bill together is 1 car in x min that is 1/x cars/min
if they work together we have the following equation
1/8 + 1/6 = 1/x
by solving the equation we find
x = 24/7
x = 3.43 min
click here to see the step by step solution of the equation
together they will wash a car in 3.43 minutes.