Question 350611
Hi,
*Note: Let t be the time to drive to Friend's house. (4hr-t) would then be the time left to drive home.
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distance same both ways r*t = d
40(mi/hr)*t = 45(mi/hr)*(4hr-t)
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Simplify and Solve
85(mi/hr)*t= 180mi
t = 180/85 hr
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d =40(mi/hr)*180/85 hr = 84.7mi