A and B start walking towards each other at 7am at speed of 12kmph and 13kmph. They were initially 25km apart. At what time do they meet?  Pick one:
A) 8pm
B) 6am
C) 7am
D) 10am
E) 8am
Time of meeting = distance / relative speed = 25/13+12 = 25/25= 
<gadget id="calculator">25/25</gadget>
<output>1</output>
1 hr after 7pm= 8am   Answer is 8am
<result>E</result>
A and B start walking towards each other at 7am at speed of 12kmph and 13kmph. They were initially 25km apart. At what time do they meet?