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    Question

    In a savings pot, coins of 10-paise, 25-paise, and 1-rupee

    are kept in the ratio 18:7:5. If the total value of coins is Rs. 2516, determine how many 1-rupee coins are there.
    A 1520 Correct Answer Incorrect Answer
    B 2808 Correct Answer Incorrect Answer
    C 1662 Correct Answer Incorrect Answer
    D 1470 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let number of coins = 18x, 7x, 5x

    Amount = (18x × 0.10) + (7x × 0.25) + (5x × 1)

    ⇒ 1.8x + 1.75x + 5x = 2516

    ⇒ 8.55x = 2516

    ⇒ x = 294

    So, number of 1-rupee coins = 5x = 5 × 294 = 1470

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