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A comet travels 12,000/y meters in 600/x seconds. What is the speed of [#permalink]

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23 Sep 2016, 04:45

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This post received KUDOS

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Bunuel wrote:

A comet travels 12,000/y meters in 600/x seconds. What is the speed of the comet in kilometers per hour?

A. 20y/x B. 20x/y C. 72y/x D. 72x/y E. 20xy

Speed of the comet=\(\frac{12000*x}{y*600}\) meters per second=\(\frac{12000*x*3600}{y*600*1000}\) kilometers per hour=\(\frac{72x}{y}\)kilometers per hour

Re: A comet travels 12,000/y meters in 600/x seconds. What is the speed of [#permalink]

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19 Dec 2017, 13:37

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