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Question

8 litres are drawn from a flask containing milk and then filled with water. The operation is performed 3 more times. The ratio of the quantity of milk left and total solution is 81625. How much milk the flask initially holds?

A
10 ltr
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B
20 ltr
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C
30 ltr
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D
40 ltr
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E
None of these
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Solution

The correct option is B 20 ltr
Let initial quantity be Q and final quantity be F
F=Q(18Q)481625=(18Q)435=18Q
Q=20

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