What time will you meet your parents

Your parents are leaving at 11:30 and average a speed of 67 mi/hr. You leave at 11:39 and average 73 mi/hr
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If you leave 9 minutes after your parents, you have to travel the same distance in 9 minutes less time so since distance is speed times time, 67t=73(t-9/60), where t is time converted to hours.

67t=73t-3*73/20=73t-219/20; 73t-67t=10.95; t=10.95/6=1.825 or 1hr 49.5 min after 11:30=13:19.5.

by Top Rated User (1.2m points)

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