Two trains leave the same train station at 6:00 am and 7:15 am and they travel at 100 kph and 125 kph respectively. How many kilometers from the train station will the two trains be together?	Select:
A) 525
B) 550
C) 575
D) 600
E) 625
At 7:15, the first train is 125 km ahead.   The second train gains 25 km each hour.   The time it takes the second train to catch the first train is 125 / 25= 
<gadget id="calculator">125 / 25</gadget>
<output>5</output>
5 hours.   In this time, the second train travels   5*125= 
<gadget id="calculator">  5*125</gadget>
<output>625</output>
625 km.   The answer is 625.
<result>E</result>
Two trains leave the same train station at 6:00 am and 7:15 am and they travel at 100 kph and 125 kph respectively. How many kilometers from the train station will the two trains be together?