instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: ajay can ride 50 km in 1 hour . in how many hours he can ride 1000 km ?
answer:
20 hrs


question:
Problem: of 30 applicants for a job , 9 had at least 4 years ' experience , 18 had degrees , and 3 had less than 4 years ' experience and did not have a degree . how many of the applicants had at least 4 years ' experience and a degree ?
answer:
10


question:
Problem: if x is a positive number and 2 the square root of x is equal to x / 2 , then x =
answer:

1