Train A leaves the station traveling at 30 miles per hour. Two hours later train В leaves the same station traveling in the same direction at 42 miles per hour. How many miles from the station was train A overtaken by train B?
Choose the correct answer.
A) 150  B) 170  C) 190  D) 210  E) 230
After two hours, Train A is ahead by 60 miles.   Train B can catch up at a rate of 12 miles per hour.   The time to catch up is 60/12= 
<gadget id="calculator">60/12</gadget>
<output>5</output>
5 hours.   In 5 hours, train A travels another  30*5= 
<gadget id="calculator"> 30*5</gadget>
<output>150</output>
150 miles for a total of 210 miles.   The answer is 210.
<result>D</result>
Train A leaves the station traveling at 30 miles per hour. Two hours later train В leaves the same station traveling in the same direction at 42 miles per hour. How many miles from the station was train A overtaken by train B?