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Question : How many kilograms of rice costing Rs. 60 per kg must be mixed with 24 kg of rice costing Rs. 42 per kg so that there may be a gain of 12% by selling the mixture at Rs. 56 per kg?

Option 1: 22 kg

Option 2: 20 kg

Option 3: 19.2 kg

Option 4: 21.2 kg


Team Careers360 23rd Jan, 2024
Answer (1)
Team Careers360 25th Jan, 2024

Correct Answer: 19.2 kg


Solution : Profit = 12% of cost price
Selling price = INR 56
Selling price = profit + cost price
⇒ 56 = 112% of cost price
⇒ Cost price of new mixture = $\frac{56}{1.12}$ = INR 50

Ratio = (50–42) : (60–50) = 8 : 10 = 4 : 5
Weight of rice costing INR 42 per kg = 24 kg
Weight of rice costing INR 60 per kg = $\frac{24}{5}$ × 4 = 19 . 2 kg
Hence, the correct answer is 19.2 kg.

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