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Problem-Solving and Data Analysis / Ratios, rates, proportional relationships, and units Difficulty: Easy

A wind turbine completes $900$ revolutions in $50$ minutes. At this rate, how many revolutions per minute does this turbine complete?

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Explanation

Choice A is correct. Dividing the number of revolutions by the number of minutes gives the number of revolutions the turbine completes per minute. It’s given that the wind turbine completes $900$ revolutions in $50$ minutes. Therefore, at this rate, this turbine completes $StartFraction 900 Over 50 EndFraction$ , or $18$ , revolutions per minute.

Choice B is incorrect and may result from conceptual or calculation errors.

Choice C is incorrect and may result from conceptual or calculation errors.

Choice D is incorrect and may result from conceptual or calculation errors.