The distance between two cities A and B is 330 Km. A train starts from A at 8 a.m. and travel 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? Choose the correct choice from the following choices:
A) 10 a.m
B) 09 a.m
C) 11 a.m
D) 05 a.m
E) 06 a.m
Explanation:   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.   Therefore, 60x + 75(x-1) = 330.   =&gt; x=3.   So,they meet at (8+3) i.e, 11a.m.   Answer: 11 a.m
<result>C</result>
The distance between two cities A and B is 330 Km. A train starts from A at 8 a.m. and travel 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?