Two trains are moving at 75 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?  Choose the correct choice from the following answers.
A) 6 6/29 sec	B) 7 1/7 sec	C) 7 2/2 sec	D) 8 1/2 sec	E) 7 1/19 sec
70 + 75= 
<gadget id="calculator">70 + 75</gadget>
<output>145</output>
145 * 5/18= 725/18 mps   D = 150 + 100= 
<gadget id="calculator">150 + 100</gadget>
<output>250</output>
250 m   T= 250 * 18/725 = 180/29 = 6 6/29 sec   6 6/29 secnswer: 6 6/29 sec
<result>A</result>
Two trains are moving at 75 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?