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  9. Q57

RPF Sub-Inspector (Executive) 2019 · Question 57 of 82

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.

  1. A84
  2. B65
  3. C56Correct
  4. D48

Answer: C. 56

Explanation

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 80 = Rs. 560 a ix Total number of coins = 560/10 = 56 .

Source: RPF SI Previous Year Paper 06-Jan-2019 — answer key & detailed solutions (ixambee PDF) · reliable-secondary

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