Inactive Tutor answered 11/09/23
Tutor
New to Wyzant
1/3 + 1/9 = 1/T
multiply by 9T
3T + T = 9
4T = 9
T = 9/4 = 2 1/4 hours to drain with both pumps Together
Sue F.
asked 11/09/23A new type of pump can drain a certain pool and three hours an older pump can drain the pool in nine hours. How long will it take both pumps working together to drain the pool?
Inactive Tutor answered 11/09/23
1/3 + 1/9 = 1/T
multiply by 9T
3T + T = 9
4T = 9
T = 9/4 = 2 1/4 hours to drain with both pumps Together
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