SOLUTION: Jerry can detail a car by himself in 50 minutes. Sally does the same job in 1 hour. How long will it take them to detail a car working together?
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Question 1070175: Jerry can detail a car by himself in 50 minutes. Sally does the same job in 1 hour. How long will it take them to detail a car working together? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! will use minutes.
Jerry can detail 1/50 of a car in a minute
Sally can detail 1/60 of a car in a minute.
Together, it takes them x minutes
(x/50)+(x/60)=1 full car detailed.
Multiply both sides by LCD of 300
6x+5x=300
11x=300
x=27 3/11 minutes together.
Jerry will do about 55% of it and Sally about 45%.
