Two trains are moving at 65 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.
A) 6 2/3 sec
B) 7 1/7 sec
C) 7 2/2 sec
D) 8 1/2 sec
E) 7 1/9 sec
70 + 65= 
<gadget id="calculator">70 + 65</gadget>
<output>135</output>
135 * 5/18= 75/2 mps   D = 150 + 100= 
<gadget id="calculator">150 + 100</gadget>
<output>250</output>
250 m   T= 250 * 2/75 = 20/3 - 6 2/3 sec   6 2/3 secnswer: 6 2/3 sec
<result>A</result>
Two trains are moving at 65 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?