Civil Services UPSC EPFO (EO/AO) Mock Test 2023 Quantitative Aptitude Time and Work Pipe and Cistern
In what time would a certain pond be filled by three pipes whose diameters are 1 cm, 1 1/3 cm, and 2 cm, running together, when the largest pipe alone can fill it in 61 minutes; given that the amount of water flowing in by each pipe being proportional to the square of its diameter?
1
32 minutes
2
36 minutes
3
40 minutes
4
44 minutes