Two varieties of rice costing Rs. 56 and Rs. 76 per kg are mixed to make 60 kg of a mixture worth Rs. 64 per kg. How many kg of the cheaper variety are used?
Correct answer B. 36 kg
Explanation
Cheaper : dearer = (76 - 64) : (64 - 56) = 12 : 8 = 3 : 2. Cheaper rice = 60 x 3/5 = 36 kg.
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