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1. 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?
∴ Required ratio
= 750 : 250
= 3 : 1
Solution:
By the rule of alligation :∴ Required ratio
= 750 : 250
= 3 : 1