In what ratio should rice priced at Rs. 7.20 per kg be blended with rice at Rs. 5.70 per kg to yield a mixture worth Rs. 6.30 per kg_________?
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Answer: B. 2:3
Explanation
By alligation the ratio is the difference below the mean price to the difference above it, which is 6.30 minus 5.70 against 7.20 minus 6.30, or 0.60 to 0.90. That simplifies to 2 to 3, so two parts of the dearer rice to three of the cheaper. The cheaper rice takes the larger share because the mixture price sits nearer to it.
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- Mathematics
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