The distance between 2 cities A and B is 1000km. A train starts from A at 1 p.m. and travels towards B at 100 km/hr. Another starts from B at 2 p.m. and travels towards A at 150 km/hr. At what time do they meet? Choose the correct choice:
A) 11am. B) 6p.m. C) 3pm. D) 2p.m. E) 1p.m.
Suppose they meet x hrs after 1 p.m.   Distance moved by first in x hrs + Distance moved by second in (x-1)hrs = 1000   100x + 150 (x-1) = 1000   x = 4.60 = 5 hrs   They meet at   1+5= 
<gadget id="calculator">  1+5</gadget>
<output>6</output>
6 p.m.   Answer is 6p.m.
<result>B</result>
The distance between 2 cities A and B is 1000km. A train starts from A at 1 p.m. and travels towards B at 100 km/hr. Another starts from B at 2 p.m. and travels towards A at 150 km/hr. At what time do they meet?