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Suppose it takes Mrs. Charlton 2.5 hours to drive to her house at the lake at 48 mph. How long will it take her to get home at 40 mph?

Dec 11th, 2014

You can set up a proportion. 

2.5/48 = x/40

Solve for x: cross multiply.

2.5(40) = 48X

100 = 48x

x = about 2.08 hours 

Hope this helps!

Dec 11th, 2014

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