Question

It would take 150 minutes to fill a swimming pool using 5 taps.

a) How many minutes will it take to fill the pool if only 3 of the taps are used?

Complete the following.
b) An assumption being made in my working is that all the taps are flowing at the same time.

Answer 1

250 minutes

Explanation:

a) Assuming all taps flow at the same rate, the time is inversely proportional to the number of taps. Using 3/5 of the total taps will take 5/3 of the time required when all taps are used.

For 3 taps, the time is ...

(5/3)(150 minutes) = 250 minutes

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b) An assumption being made in my working is that all the taps are flowing at the same rate.