PSAT Math Multiple-Choice Practice Question 363
Question: 363
If the total weight of 31 identical medieval coins is approximately 16 ounces, which of the following is closest to the weight, in ounces, of 97 of these coins?
Correct Answer: C
Explanation:
C
Difficulty: Easy
Getting to the Answer: Set up a proportion and cross-multiply to solve:
Choice (C) is correct. Given that the choices are spaced far apart, you could have used estimating to answer this question. Since 97 is about 3 times 31, look for the choice that is about 3 times 16, which is 48. Only (C) is close.
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