SOLUTION: if 2 pipes can fill a pool in 18 hours when both pipes are open and one of the pipes can fill the pool in 30 hours, how long would it take the other pipe to fill the pool alone

Question 345044: if 2 pipes can fill a pool in 18 hours when both pipes are open and one of the pipes can fill the pool in 30 hours, how long would it take the other pipe to fill the pool alone
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
if 2 pipes can fill a pool in 18 hours when both pipes are open and
one of the pipes can fill the pool in 30 hours,
how long would it take the other pipe to fill the pool alone
:
Let t = time required by the other pipe alone
Let the completed job = 1 (a full pool)
:
+ = 1
Multiply by 30t, results:
18t + 30(18) = 30t
540 = 30t - 18t
540 = 12t
t =
t = 45 hr for the other pipe to fill the pool alone
:
:
Check this
+ = 1
+ = 1

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