1.

In a mixture, unbroken and broken rice grains are in the ratio 3 : 2. How much fraction of the mixture must be drawn off and substituted with broken grains, so that the ratio of unbroken and broken grains becomes 1 : 1?

A. 1/3
B. 1/6
C. 1/4
D. 2/5
Answer» C. 1/4


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