SOLUTION: six tapes fill a empty cistern in 8 hours. How much more time will be taken if two tapes go out of orders. Assume all the tapes supply water at the same rate.

Question 950682: six tapes fill a empty cistern in 8 hours. How much more time will be taken if two tapes go out of orders. Assume all the tapes supply water at the same rate.
Found 2 solutions by ankor@dixie-net.com, josmiceli:
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Assume you mean:
Six taps fill a empty cistern in 8 hours.
6 * 8 = 48 tap-hrs required
How much more time will be taken if two taps go out of order.
let t = time required by the 4 remaining taps
4t = 48
t = 12 hrs required by 4 taps
But it asks how much more time.
12 - 8 = 4 more hrs
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
One working alone takes hrs
to fill a cistern
Four of them take hrs
Six of them take hrs
The difference in time is hrs more

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