Two stations P and Q are 245 km apart on a straight track. One train starts from P at 7 a.m. and travels towards Q at 20 kmph. Another train starts from Q at 8 a.m. and travels towards P at a speed of 25 kmph. At what time will they meet?	Choose the correct choice from the following answers
A) 10 am B) 12 am C) 10.30 am D) 12.30 am E) 1 pm
Assume both trains meet after x hours after 7 am   Distance covered by train starting from P in x hours = 20x km   Distance covered by train starting from Q in (x-1) hours = 25(x-1)   Total distance = 245   =&gt; 20x + 25(x-1) = 245   =&gt; 45x = 270   =&gt; x= 6   Means, they meet after 6 hours after 7 am, ie, they meet at 1pm   Answer is 1 pm.
<result>E</result>
Two stations P and Q are 245 km apart on a straight track. One train starts from P at 7 a.m. and travels towards Q at 20 kmph. Another train starts from Q at 8 a.m. and travels towards P at a speed of 25 kmph. At what time will they meet?