Multiple choice

Krishna bought some wheat at Rs. 10 per kilogram and mixes it with 2 kg wheat bought from a ration shop at the rate of Rs. 8 per kilogram. He mixes the two and sells at Rs. 11 per kilogram. If he makes 25% profit, how much wheat did he buy at Rs. 10/kg?

  1. 3 kg

  2. 4 kg

  3. 3/4 kg

  4. 4/3 kg
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let x be the amount of wheat at Rs 10/kg. Total cost = 10x + 2*8 = 10x + 16. Total weight = x + 2. Selling price = 11(x+2). Profit = 25%, so SP = 1.25 * CP. 11(x+2) = 1.25(10x + 16). 11x + 22 = 12.5x + 20. 2 = 1.5x, x = 2/1.5 = 4/3 kg.

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