1.

In what ratio must a grocer mix tea at $ 60 a kg, and $ 65 a kg, so that by selling the mixture at $ 68.20 a kg, he may gain 10%?

A. 3 : 2
B. 3 : 4
C. 3 : 5
D. 4 : 5
Answer» B. 3 : 4


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