1.

Sixty percent of the rats included in a particular experiment were female rats. If some of the rats died during the experiment and 30% of rats died were male, what was the ratio of the death rate among the male rats to the death rate among the female rats?

A. 3 : 4
B. 9 : 14
C. 9 : 16
D. 6 : 7
Answer» C. 9 : 16


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