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    Question

    A 160-litre mixture contains petrol and water, only in

    ratio 5:3, respectively. How much water should be added in the mixture so that the quantity of water becomes 50% of quantity of resultant mixture?
    A 50 litres Correct Answer Incorrect Answer
    B 38 litres Correct Answer Incorrect Answer
    C 40 litres Correct Answer Incorrect Answer
    D 70 litres Correct Answer Incorrect Answer

    Solution

    Quantity of water in the initial mixture = 160 ├Ч (3/8) = 60 litres Quantity of petrol in the initial mixture = 160 ├Ч (5/8) = 100 litres Since, weтАЩre not adding petrol, 100 litres of petrol will represent 50% of the new mixture. So, total quantity of resultant mixture = 100 ├╖ 0.50 = 200 litres Quantity of water to be added = 200 тАУ 160 = 40 litres

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