Two vessels M and N contains ‘x’ litres of petrol and ‘y’ litres of kerosene respectively. ‘z’ lit

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Q 2265845765.     Two vessels M and N contains ‘x’ litres of petrol and ‘y’ litres of kerosene respectively. ‘z’ litres of petrol and same quantity of kerosene is taken out and then transferred to N and M respectively. This process is repeated several times. If after the first operation the concentration of petrol or kerosene is same in M and N. What is the value of ‘z’?
IBPS-PO 2017 Mock Mains
A

xy/(x – y)

B

2xy/(x + y)

C

xy/(x + y)

D

(x/y)^2

E

None of these

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