The cost of 10 kg of apples is equal to the cost of 24 kg of rice. The cost of 6 kg of flour equals the cost of 2 kg of rice. The cost of each kg of flour is Rs.20.50. Find the total cost of 4 kg of apples, 3 kg of rice and 5 kg of flour?
Correct answer: B. Rs.877.40
- A. Rs.849.40
- B. Rs.877.40
- C. Rs.901.60
- D. Rs.815.20
- E. None of these
Explanation
Six kilograms of flour cost 6 x Rs.20.50 = Rs.123.00, and this equals the cost of 2 kg of rice, so 1 kg of rice costs Rs.61.50. Ten kilograms of apples cost 24 x Rs.61.50 = Rs.1476.00, so 1 kg costs Rs.147.60; the total is 4 x Rs.147.60 + 3 x Rs.61.50 + 5 x Rs.20.50 = Rs.877.40. The likely trap is option a, Rs.849.40, from using the wrong rice-to-flour relationship.
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