Mathematics, 26.07.2019 06:30 19cmulett

Joan and her brother justin left a hotel at the same time, driving in opposite direction at constant rates. after traveling for 4 hours, they were 480 miles apart. if justin drove 10 miles per hour faster than joan, how fast did joan drive.

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Joan and her brother justin left a hotel at the same time, driving in opposite direction at constant...

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