MediumMath· Problem-Solving and Data Analysis· Ratios, rates, proportional relationships, and units· MCQ
Which of the following speeds is equivalent to 90 kilometers per hour? (1 kilometer = 1,000 meters)
A
25 meters per second
B
32 meters per second
C
250 meters per second
D
324 meters per second
Correct answer: A
Explanation
Choice A is correct. Since 1 kilometer is equal to 1,000 meters, it follows that 90 kilometers is equal to meters. Since 1 hour is equal to 60 minutes and 1 minute is equal to 60 seconds, it follows that 1 hour is equal to seconds. Now is equal to , which reduces to or 25 meters per second.
Choices B, C, and D are incorrect and may result from conceptual or calculation errors.
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id cb_question_bank:73831bba-349d-4e77-976b-68b15fd4518d · question 8917ce38 · IBN 029306-DC
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