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a person on a moving sidewalk travels 21 feet in 7 seconds the moving sidewalk has the length of 108 feet how long will it take to move from one end of the sidewalk to the other
9 years ago

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Ms. Sue
7/21 = x/108

Cross multiply and solve for x.

or

http://www.jiskha.com/display.cgi?id=1415068569
9 years ago

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