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Please solve this word problem fast!!

Please solve this word problem fast!!-example-1

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The answer would be around 168. Because 21 cars pass in 15 minutes, there are 4 15 minutes in an hour. 21x4 is 84. So 84 cars pass in an hour. But since its 2 hours you need to multiply 84 by 2. Which gets you the final answer of 168
User Sirjay
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