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Cost of two types of pulses is Rs. 15 and Rs. 20 per kg, respectively. If both the pulses are mixed together in the ratio 2 : 3, then what should be the price of mixed variety of pulses per kg?

Cost of two types of pulses is Rs. 15 and Rs. 20 per kg, respectively. If both the pulses are mixed together in the ratio 2 : 3, then what should be the price of mixed variety of pulses per kg? Correct Answer Rs. 18

Given:

Cost of first variety of pulse = Rs. 15

Cost of second variety of pulse = Rs. 20

Formula used:

Rule of alligation

Calculation:

Let the cost of mixed variety of pulse = X

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So, (20 - X) : (X - 15) = 2 : 3

⇒ 2x + 3x = 60 + 30

⇒ 5x = 90

⇒ x = 18

∴ Cost of mixed variety of pulse is Rs. 18

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