The cost of Type 1 rice is Rs. 15 per kg and Type 2 rice is Rs. 20 per kg. If both Type 1 and Type 2 are mixed in the ratio of 2 : 3, then the price per kg of the mixed variety of rice is:_______?
Correct answer: A. Rs. 18
- A. Rs. 18
- B. Rs. 18.50
- C. Rs. 19
- D. Rs. 19.50Fun & Trivia
Explanation
For every 5 kg of mixture, there are 2 kg of Type 1 rice and 3 kg of Type 2 rice. The total cost is 2 kg x Rs.15 per kg + 3 kg x Rs.20 per kg = Rs.90, so the price per kg is Rs.90 / 5 kg = Rs.18 per kg. The likely mistake is option c, Rs.19, from weighting the two prices incorrectly.
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