Two trains are moving at 85 kmph and 70 kmph in opposite directions. Their lengths are 150 m and 100 m respectively. The time they will take to pass each other completely is?	Pick one:
A) 5 25/31 sec	B) 7 1/17 sec	C) 7 2/2 sec	D) 8 1/2 sec	E) 7 1/9 sec
70 + 85= 
<gadget id="calculator">70 + 85</gadget>
<output>155</output>
155 * 5/18= 775/18 mps   D = 150 + 100= 
<gadget id="calculator">150 + 100</gadget>
<output>250</output>
250 m   T= 250 * 18/775 = 180/31 = 5 25/31 sec   5 25/31 secnswer: 5 25/31 sec
<result>A</result>
Two trains are moving at 85 kmph and 70 kmph in opposite directions. Their lengths are 150 m and 100 m respectively. The time they will take to pass each other completely is?