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    Question

    Rs. 2,400 is divided among P, Q, and R in the ratio

    3:7:5. Find the difference between the amount received by P and Q together and Q and R together.
    A Rs.320 Correct Answer Incorrect Answer
    B Rs.400 Correct Answer Incorrect Answer
    C Rs.450 Correct Answer Incorrect Answer
    D Rs.335 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let the amounts received by P, Q, and R be Rs. 3x, Rs. 7x, and Rs. 5x respectively.
    Amount received by P and Q = 2400 × (3 + 7) ÷ (3 + 7 + 5) = 2400 × 10 ÷ 15 = Rs. 1600
    Amount received by Q and R = 2400 × (7 + 5) ÷ 15 = 2400 × 12 ÷ 15 = Rs. 1920
    Required difference = 1920 - 1600 = Rs.320

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