SOLUTION: 5 taps fill a tank in 40 minutes. If one tape is out of order then in how many minutes tank filled?

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Question 943877: 5 taps fill a tank in 40 minutes. If one tape is out of order then in how many minutes tank filled?
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
The rate is 4%2F5 of the rate for all five taps.

r, rate for one tap;
t, time in minutes for four taps;
4%2Ar%2At=5%2Ar%2A40