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28-01-2016
Mathematics

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Joy walks 60 m to a slide in 180 sec. and slides down 9 times faster than she walks. If it takes 30 sec. to slide down, how long is the slide?

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thestar thestar

28-01-2016

60 times 9 equals 54 54/180 = x/30 Solve for x to get 9 The slide is 9 m long

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