The distance between two cities A and B is 330 km. A train starts from A at 8 a.m. and travels towards B at 60 km/hr. Another train starts from B at 9 a.m. and travels towards A at 75 km/hr. At what time do they meet?  Select:
A) 12 B) 10 C) 11 D) 09 E) 03
Suppose they meet x hrs after 8 a.m. Then,   (Distance moved by first in x hrs) + [Distance moved by second in (x - 1) hrs] = 330   60x + 75(x - 1) = 330 =&gt; x = 3   So, they meet at (8 + 3) i.e., 11 a.m.   Answer:11
<result>C</result>
The distance between two cities A and B is 330 km. A train starts from A at 8 a.m. and travels towards B at 60 km/hr. Another train starts from B at 9 a.m. and travels towards A at 75 km/hr. At what time do they meet?