PSAT Math Grid-Ins Question 78: Answer and Explanation
Question: 78
There are about 3 feet per meter and 1,000 meters per kilometer. Two cities are 1,800,000 feet apart; about how many kilometers apart are the two cities?
Correct Answer: 600
Explanation:
600
Difficulty: Easy
Category: Unit Conversion
Getting to the Answer: For unit conversions, start by deciding whether to multiply or divide. The question asks you to convert from feet to kilometers, so you should divide because a foot is a smaller measurement than a kilometer is. In other words, there will be fewer kilometers than feet. Convert feet into meters, and then meters into kilometers:
Grid in 600.
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