A and B are two stations 390 km apart. A train starts from A at 10 a.m. and travels towards B at 65 kmph. Another train starts from B at 11 a.m. and travels towards A at 35 kmph. At what time do they meet?  Choose the correct choice.
A) 5.15 a.m B) 7.20 a.m C) 2.15p.m D) 3.45p.m E) 6.10p.m
Suppose they meet x hours after 10 a.m.   Then, (Distance moved by first in x hrs) + [Distance moved by second in (x-1) hrs]=390.   65x + 35(x-1) = 390 =&gt; 100x = 425 =&gt; x =	17/4   So, they meet 4 hrs.15 min. after 10 a.m i.e., at 2.15 p.m.   Ans: 2.15p.m
<result>C</result>
A and B are two stations 390 km apart. A train starts from A at 10 a.m. and travels towards B at 65 kmph. Another train starts from B at 11 a.m. and travels towards A at 35 kmph. At what time do they meet?