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Mixture and Alligation #15

15. In what ratio must tea at Rs.62 per kg be mixed with tea at Rs. 72 per kg so that the mixture must be worth Rs. 64.50 per kg?
A. 3 : 1B. 2 : 1
C. 1 : 2D. 1 : 3

Answer: Option A

Explanation:

By rule of alligation,

Cost of 1 kg of 1st kind teaCost of 1 kg of 2nd kind tea
6272
Mean Price
64.5
72-64.5=7.564.5-62=2.5

Required Ratio = 7.5 : 2.5 = 3 : 1

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