if a pipe can fill certain tank in 36 minutes and release pipe can empty tank in 45 minutes if both pipes are opened at once,how long does it take to fill the tank?
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Answer:
81 minutes
Step-by-step explanation:
No. of minutes to fill the tank = 36 mins
No. of minutes to empty the tank = 45 mins
No. of minutes needed to fill the tank when both pipes are released = 36 mins + 45 mins = 81 mins
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