Multiple Choice Questions on A tap fill a tank in 12 min at the rate of 6 litre min another tap empties the tank in 36 min How mu........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A tap fill a tank in 12 min at the rate of 6 litre min another tap empties the tank in 36 min How mu...........

Quantitative Aptitude ( CCS) Pipes&cistern
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    A tap fill a tank in 12 min. at the rate of 6 litre/min. another tap empties the tank in 36 min. How much remains in the tank after 10 min. ?

    20 L

    Incorrect Answer

    30 L

    Incorrect Answer

    40 L

    Correct Answer

    50 L

    Incorrect Answer
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    Explanation:

     Total capacity of tank = 6*12 litres = 72 litres.
    The part filled by the two taps in 1 min. = (1/12 - 1/36) = 2/36 = 1/18.
    Amount of water in the tank after 10 minutes = 10*1/18 * 72 = 40 litres.

    By: Deepak Dawra
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