instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: in what time will a train 50 m long cross an electric pole , it its speed be 360 km / hr ?
answer:
0.5


question:
Problem: excluding stoppages , the average speed of a bus is 60 km / hr and including stoppages , the average speed of the bus is 15 km / hr . for how many minutes does the bus stop per hour ?
answer:
4


question:
Problem: in a class of 25 students in an examination in maths 3 students scored 95 marks each , 5 get zero each and the average of the rest was 45 . what is the average of the whole class ?
answer:

c ) 42