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27 January, 13:03

A vessel is full of a mixture of kerosene and petrol in which there is 18% kerosene. Eight litres are drawn off and then the vessel is filled with petrol. If the kerosene is now 15% how much does the vessel hold?

a) 40 lit b) 32 lit c) 36lit d) 48lit

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  1. 27 January, 16:13
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    The answer in here is d) 48 lit. We know this when we do the following procedure:

    kerosene=18%

    so petrol = 82%

    after kerosene = 15%

    petrol=85%

    so 3% = 8

    lit so total kerosene in the mixture = (8x18/3) = 48 lit

    Hope this is useful
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