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3 October, 10:25

Larry travels 60 miles per hour going to a friend's house and 50 miles per hour coming back, using the same road. he drove a total of 5 hours. what is the distance from larry's house to his friend's house, rounded to the nearest mile?

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  1. 3 October, 13:55
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    V1=60. 60*t1=50*t2=S

    V2=50

    T=t1+t2=5. 5-t2=t1

    60 * (5-t2) = 50*t2

    300-60*t2=50*t2

    300=50*t2+60*t2

    300=t2 * (50+60)

    300=t2*110

    300/110=t2

    S=50*300/110
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