Pipes and Cisterns Practice Test 1 with solutions

Question : 24 of 40

Marks: +1, -0

If 20 taps together can fill a cistern in 7 seconds, find the time taken to fill the cistern if 8 more taps are attached to the cistern.

Solution:

Time taken by 20 taps to fill cistern = 7 seconds
Time taken by 1 tap to fill cistern = (7 × 20) seconds
Time taken by 28 taps to fill cistern
=

({7×20}/{28})

seconds
= 5 seconds

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