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    Question

    The price of a product P was increased by 60% and then

    decreased by 25%. After these changes, the prices of products P and Q are in the ratio 9:7. If the difference between their prices is Rs. 64, what was the initial price of product P?
    A Rs.160 Correct Answer Incorrect Answer
    B Rs.200 Correct Answer Incorrect Answer
    C Rs.114 Correct Answer Incorrect Answer
    D Rs.195 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the initial price of product P be Rs. x Price after 60% increase = β†’ x Γ— (160/100) = x Γ— (8/5) Then 25% decrease: β†’ x Γ— (8/5) Γ— (75/100) = x Γ— (8/5) Γ— (3/4) Now, price of P : price of Q = 9 : 7 β†’ Difference = Rs. 64 So, x Γ— (8/5) Γ— (3/4) = 9 Γ— (64/2) β‡’ x = 160

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