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170. Malik's recipe for 4 servings of a certain dish requires 3/2 cups of pasta. According
to this recipe, what is the number of cups of pasta that Malik will use the next time he
prepares this dish?
1). The next time he prepares this dish, Malik will make half as many servings as he did
the last time he prepared the dish.
2). Malik used 6 cups of pasta the last time he prepared this dish.
Answer:
Premise: one serving includes a certain number of dishes.(we don't know the exact
number),and a dish requires 3/2 cups of pasta.( it means 4Y=mX, and X=3/2pasta. )
Question: nY require how many cups of pasta?
1). if Malik make X servings next time. He did prepare 2X dishes last time.
2). Malik used 6 cups of pasta the last time he prepared this dish.(it means 2X=6).
In this case, either condition one or condition two cannot deduce the final answer in that
the decisive factors m, n are unknown.
As a result, the correct answer is C |
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发表于 2010-11-2 18:36:55
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