Question 1069502

Two trains were scheduled between lancaster and Philadelphia. One train averaged 45 mph and the other made more stops and averaged only 35 mph. The second train took .4 of an hour longer to make the run. How far is it between the stations? 
<pre>Let distance between the 2 stations be D
We then get the following TIME equation: {{{D/35 - D/45 = .4}}}
9D – 7D = .4(315) ------- Multiplying by LCD, 315
2D = 126
D, or distance between stations = {{{highlight_green(matrix(1,4, 126/2, or, 63, miles))}}}