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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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 . 18

B . 19

C . 19.50

D . 18.50

Answer: Option A

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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