Question
In a box, there are three different types of old coins
in ratio 6: 7: 8; the value of the old coin is Rs. 1, Rs. 5 and Rs. 10 respectively. If the total value of the coin is 847 rupees in the box, then find the number of coins worth 10 rupees.Solution
The ratio of coins of Rs. 1, 5, and 10 rupees is = 6:7:8 The ratio of values of Rs. 1, 5, and 10 rupees is = 6x1:7×5:8 × 10 = 6:35:80 6+35+80 = 121 121 unit = 847 1 unit = 847/121  = 7 Total value of coins of Rs. 10 = 7 x 80 = Rs. 560  Total number of coins = 560/10 = 56
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