Three pipes X Y and Z discharge three different chemicals A B and C in a tank The pipes can fill the...........

Quantitative Aptitude (CPO) Pipes&cistern

Three pipes X. Y and Z discharge three different chemicals A. B and C in a tank. The pipes can fill the tank in 20. 25 and 40 minutes

respectively. What will be the proportion of chemical B in the tank, if all the pipes are open for 10 minutes?

This questions was previously asked in

SSC CPO 14th-March-2019-Shift-2

View All SSCCPO Previous Year Papers

$_{15}^{11}$

$_{23}^{13}$

$_{23}^{8}$

$_{7}^{4}$

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Explanation:

In 1 minute A,B and C together can fill the tank is = (1/20) + (1/25) + (1/40)
= (10 + 8 + 5)/200
= 23/200.
So,in 10 minutes they can fill (230/200).
B can fill in 10 minutes is = 10/25.
So, proportion in B will be = (200/230) × (10/25).
= 8/23.
So, C is correct choice.