Question

A tap can empty
a tank in 45 minutes. a second tap can empty it in 30 minutes. if both the taps operate simultaneously, how much time is needed to empty the tank?​

Answer 1

Answer:

18 min

Step-by-step explanation:

A Tap flow rate to drain is 1/30 or 3/90 per minute

B Tap flow rate to drain is 1/45 or 2/90 per minute

C the Combined flow rates to drain is 5/90 per minute. (90 divided by 5 = 18)

Answer: It will take 18 minutes for this tank to drain with both Taps open.

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