Comprehension Passage
Directions: Read the following information carefully and answer the questions based on it.
Three pipes A, B and C containing Water, Oil and Petrol respectively can fill an empty tank in 15 minutes, 25 minutes and 30 minutes respectively.
Pipe A and Pipe B are opened together to fill an empty tank. After one minute, Pipe C is also opened. Find the proportion of Petrol in the tank when the tank is half filled.
1
67/315
2
49/315
3
29/315
4
59/315
5
64/315