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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