SOLUTION: A square swimming pool is 10 m long on each side and has a level dept 3 m. It is being filled with water at a rate of 3 m³ per minute. At the same time, a hose is draining water f

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Question 1142211: A square swimming pool is 10 m long on each side and has a level dept 3 m. It is being filled with water at a rate of 3 m³ per minute. At the same time, a hose is draining water from the pool at the rate of 8 m³ per minute. The pool started to 2/3 full at noon, what is time will it be empty?
A) 12:25 pm
B)12:40 pm
C) 12:55 pm
D) 1:00 pm
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52784) About Me  (Show Source):
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Volume filled at noon, 100%2A2=200 cubic meters
Effective volume change rate, 3-8=-5, cubic inches per minute

How many minutes to drain the 200%2F5 cubic meters water?

40minutes

Time would be 12:40 PM.