Question 293069
    Candy and Tom share a paper route. It takes Candy 70 minutes to deliver all the papers, and it takes Tom 80 minutes. How long does it take when they work together?
.
Candy's rate:
1 route per 70 minutes
Tom's rate:
1 route per 80 minutes
.
Let x = time it takes if they work together
then
x(1/70 + 1/80) = 1
Multiplying both sides by 5600:
x(80 + 70) = 5600
x(150) = 5600
x = 5600/150
x = 37.33 minutes