Two cars started at the same time, from the same point, driving along the same road. The rate of the first car is 50 mph and the rate of the second car is 60 mph. How long will it take for the distance between the two cars to be 30 miles? Choose the correct choice from the following options:
A) 1 hrs B) 2 hrs C) 3 hrs D) 4 hrs E) 5 hrs
car 1 50 50 50 total=150   car 2 60 60 60 total=180 differece=30miles after 3 hrs.   ANSWER:3 hrs
<result>C</result>
Two cars started at the same time, from the same point, driving along the same road. The rate of the first car is 50 mph and the rate of the second car is 60 mph. How long will it take for the distance between the two cars to be 30 miles?