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Mixture and Alligation #16

16. In what ratio must a grocer mix two varieties of pulses costing Rs.15 and Rs. 20 per kg respectively to obtain a mixture worth Rs.16.50 per kg?
A. 7 : 3B. 2 : 1
C. 3 : 7D. 1 : 2

Answer: Option A

Explanation:

By rule of alligation,

CP of 1 kg of 1st variety pulseCP of 1 kg of 2nd variety pulse
1520
Mean Price
16.5
20-16.5 = 3.516.5-15=1.5

Required Ratio = 3.5 : 1.5 = 35 : 15 = 7 : 3

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