Multiple choice

A bag has coins of Rs. 1, 50 paise and 25 paise. The ratio of coins respectively is three consecutive odd prime numbers that are in ascending order. The total value of coins in the bag is Rs. 58. Find the total number of coins the bag has?

  1. 100

  2. 110

  3. 120

  4. 125

  5. Can't be determined
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Three consecutive odd primes in ascending order: 3, 5, 7. Let coin counts be 3k, 5k, 7k. Total value = 3k × 1 + 5k × 0.50 + 7k × 0.25 = 3k + 2.5k + 1.75k = 7.25k = Rs. 58. So k = 8. Total coins = 3k + 5k + 7k = 15k = 15 × 8 = 120.

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