Examples of Math Problems: 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

Thursday, June 6, 2013

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

C1: 1/45
C2: 1/30
together:

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

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

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

18 minutes

:)

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