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    Question

    In a mixture of 315 litres, the ratio of petrol to

    diesel is 7:4. If тАШxтАЩ litres of diesel is added to the mixture, such that the ratio of petrol to diesel in the resultant mixture becomes 5:4, then find the value of тАШxтАЩ.
    A 26 litres Correct Answer Incorrect Answer
    B 35 litres Correct Answer Incorrect Answer
    C 20 litres Correct Answer Incorrect Answer
    D 45 litres Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Quantity of petrol in the mixture = 315 ├Ч 7/11 = 200 litres Quantity of diesel in the mixture = 315 ├Ч 4/11 = 115 litres According to the question, 200:(115 + x) = 5:4 4 ├Ч 200 = 5 ├Ч (115 + x) 800 = 575 + 5x 5x = 225 x = 45 litres

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