SOLUTION: Three computers can print out a task in 14 min, 21 min, and 42 min, respectively. How long would it take to complete the task with all three computers working?
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Question 812522: Three computers can print out a task in 14 min, 21 min, and 42 min, respectively. How long would it take to complete the task with all three computers working?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
x/14+x/21+x/42=1
x = 7
check
7/14+7/21+7/42=1
1/2+1/3+1/6=1
3/6+2/6+1/6=1
6/6=1
1=1
ok
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