instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: in x game of billiards , x can give y 20 points in 60 and he can give z 30 points in 60 . how many points can y give z in x game of 120 ?
answer:
30


question:
Problem: in 1950 , richard was 4 times as old as robert . in 1955 , richard was 3 times as old as robert . in which year was richard 1.5 times as old as robert ?
answer:
200


question:
Problem: at 1 : 00 pm , a truck left city p and headed toward city q at a constant speed of 36 km / h . one hour later , a car left city q and headed toward city p along the same road at a constant speed of 48 km / h . if the distance between city p and city q is 330 km , at what time will the truck and the car meet each other ?
answer:

5 : 3