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    Question

    A bag contains certain number of coins of different

    denominations. The ratio of the number of Rs. 1 coins to Rs. 2 coins is 4 : 5, respectively and the ratio of number of Rs. 2 coins to Rs. 10 coins is 5 : 3 respectively. Find the total value of the Rs. 10 coins, if the total value of the Rs. 2 coins in the bag is Rs. 120.
    A Rs. 320 Correct Answer Incorrect Answer
    B Rs. 400 Correct Answer Incorrect Answer
    C Rs. 420 Correct Answer Incorrect Answer
    D Rs. 360 Correct Answer Incorrect Answer
    E Rs. 380 Correct Answer Incorrect Answer

    Solution

    Ratio of the number of coins of denominations Rs. 1 : Rs. 2 : Rs. 10 = 4 : 5 : 3
    Let, the number of coins of Rs. 1, Rs. 2 and Rs. 10 in the bag be 4x, 5x and 3x.
    Since, the total value of Rs. 2 coins in the bag is Rs. 120
    So, value of Rs. 2 coins = 5x × 2 = 10x
    10x = 120, x = 12
    Therefore, number of Rs. 10 coins in the bag 3x = 36
    So, required value of Rs. 10 coins = 3 × 12 × 10 = Rs. 360

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