SOLUTION: : two computers can print out a task in 45 minutes and 30 minutes respectively. how long would it take to compete the task with both computers working together

Algebra ->  Rate-of-work-word-problems -> SOLUTION: : two computers can print out a task in 45 minutes and 30 minutes respectively. how long would it take to compete the task with both computers working together      Log On


   

Question 756080: : two computers can print out a task in 45 minutes and 30 minutes respectively. how long would it take to compete the task with both computers working together
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
C1: 1/45
C2: 1/30
together:

%0D%0A1%2F45%2B1%2F30=1%2Ft%0D%0A

%0D%0At=%2845%2A30%29%2F%2845%2B30%29=18%0D%0A

18 minutes


:)