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Ratios, rates, proportional relationships, and units SAT question

Math · Problem-Solving and Data Analysis · Easy · Answer it here, explanation included.

What length, in centimeters, is equivalent to a length of $51$ meters? $(1 meter = 100 centimeters)$

ExplanationShow

Choice C is correct. Since $1$ meter is equal to $100$ centimeters, $51$ meters is equal to $51 meters (\frac{100 centimeters}{1 meter})$ , or $5, 100$ centimeters.

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

Choice B is incorrect and may result from dividing, rather than multiplying, $51$ by $100$ .

Choice D is incorrect. This is the length, in millimeters rather than centimeters, that is equivalent to a length of $51$ meters.

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