SOLUTION: Allison can assemble a computer​ by herself in 60 minutes. Working with an assistant, she can assemble a computer in 50 minutes. How long would it take her assistant to do it

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Allison can assemble a computer​ by herself in 60 minutes. Working with an assistant, she can assemble a computer in 50 minutes. How long would it take her assistant to do it      Log On


   

Question 1118293: Allison can assemble a computer​ by herself in 60 minutes. Working with an assistant, she can assemble a computer in 50 minutes. How long would it take her assistant to do it working alone?
Answer by josgarithmetic(39628) About Me  (Show Source):
You can put this solution on YOUR website!
x, the time for just the assistant alone

1%2F60%2B1%2Fx=1%2F50
-
300x%281%2F60%2B1%2Fx%29=300x%281%2F50%29
5x%2B300=6x
highlight%28x=300%29------minutes. (five hours)
-
check
1%2F60%2B1%2F300=1%2F50
%285%2F5%29%281%2F60%29%2B1%2F300
5%2F300%2B1%2F300
6%2F300
%282%2A3%29%2F%283%2A100%29
2%2F100=1%2F50 okay