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03-04-2020
Mathematics

contestada

A person on a moving sidewalk travels 12 feet in 4 seconds. The moving sidewalk has a length of 90 feet. How long will it take to move from one end to the other

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03-04-2020

Answer:

30 seconds

Step-by-step explanation:

Make a proportion: 12/4 = 90/x

Now solve it:

12/4 = 90/x

(Cross Multiply)

12x = 360

(Divide by 12 on both sides)

x=30

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