Mathematics, 29.07.2019 17:50 Wemaybewrong

Brantley and shawna walk to grandma's house at a rate of 4 mi/hr. they ride their bicycles back at 8mi/hr over the same route that they walked. it takes 1 hr longer to walk than to ride. how long did it take them to walk to grandma's?

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Brantley and shawna walk to grandma's house at a rate of 4 mi/hr. they ride their bicycles back at 8...