The cost of type - I rice is Rs. 15 per kg and type - II is Rs. 20 per kg. If bo

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Question
The cost of type - I rice is Rs. 15 per kg and type - II is Rs. 20 per kg. If both type - I and type - II are mixed in the ratio of 2 : 3, then find the price per kg of the mixed variety.
Options
A. 19.50
B. 19
C. 18.50
D. 18

Correct Answer

18

Explanation

Let the price per kg of mixed variety be Rs. P;
then By the rule of alligation,
Now, (20 - P) / (P - 15) = (2 / 3)
? 60 ? 3P = 2P ? 30
? 5P = 90
? P = Rs. 18

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7.
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9. A certain amount earns simple interest of Rs. 1750 after 7 years. Had the interest been 2% more, how much more interest would it have earned?
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A. Rs. 35
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10.
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