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Jim drove the 120 miles to Grandmother's house in 3 hours. He increased his speed by10 miles per hour on the way home. How long did it take him to drive home?

Jim drove the 120 miles to Grandmother s house in 3 hours. He increased his speed by10 miles per hour on the way home. How long did it take him to drive home? class=

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joselina

Ok so basically you want for this specific problem to set up a proportion.  So 120 mi/3hours=x/10 miles. X is the unknown variable we are solving for so pay close attention. So now I am going to multiply 120 times 10 which is 1200 now that divided by 3 is 400. Hoped this helped !!!

bmreed18demonkined

Well if he drove there in 3 hour and went 120 miles then it would have took him 2 hours to get home

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