An Inlet Pipe on a Swimming Pool Can Be Used

question 132

Multiple Choice

An inlet pipe on a swimming pool can be used to fill the pool in 45 hours. The drain pipe can be used to empty the pool in 50 hours. If the pool is half filled and then the drain pipe is accidentally opened, how long will it take to fill the pool? ​

• A) 209 hours
• B) 225 hours
• C) 237 hours
• D) 450 hours
• E) 5 hours

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