Multiple choice

The ratio of number of 5 rupees coins and 10 rupees coins that Raj has is 4 : 5. If the number of 10 rupees coins is halved, then he will have an amount of Rs. 945. How many 5 rupees coins does he have?

  1. 78

  2. 84

  3. 72

  4. 68
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let 5₹ coins = 4x and 10₹ coins = 5x. When 10₹ coins are halved: 4x × 5 + 2.5x × 10 = 945. This gives 20x + 25x = 45x = 945, so x = 21. 5₹ coins = 4x = 84. Option B is correct.

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