SAT Math Multiple Choice Practice Question 307: Answer and Explanation

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Question: 307

21. If one pound of grain can feed five chickens or two pigs, then ten pounds of grain can feed 20 chickens and how many pigs?

A. 8
B. 10
C. 12
D. 24
E. 40

Correct Answer: C


C Since one pound feeds five chickens, four pounds are needed to feed 20 chickens. This leaves pounds of feed. Since each pound can feed two pigs, six pounds can feed pigs.

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