Anil mixes cocoa with sugar in the ratio 3 : 2 to prepare mixture A, and coffee with sugar in the ratio 7 : 3 to prepare mixture B. He combines mixtures A and B in the ratio 2 : 3 to make a new mixture C. If he mixes C with an equal amount of milk to make a drink, then the percentage of sugar in this drink will be
Explanation:
Let 20 kgs and 30 kgs of A and B are mixed. ∴ Amount of sugar in C = 2/5 × 20 + 3/10 × 30 = 17 kgs
Now we have 50 kgs of C mixed with 50 kgs of milk i.e., 100 kgs of final solution.
⇒ Concentration of sugar in final solution = 17/(50 + 50) × 100% = 17%
Hence, option (b).
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