instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: a van takes 5 hours to cover a distance of 495 km . what speed in kph should the van maintain to cover the same distance in 3 / 2 of the previous time ?
answer:
66


question:
Problem: if a - b = 5 and a 2 + b 2 = 31 , find the value of ab .
answer:
3


question:
Problem: a cube is painted red on all faces . it is then cut into 27 equal smaller cubes . how many h cubes are painted on only 2 faces ?
answer:

12