instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: carl is facing very difficult financial times and can only pay the interest on a $ 10,000 loan he has taken . the bank charges him a quarterly compound rate of 8 % . what is the approximate interest he pays annually ?
answer:
3500


question:
Problem: 90 % of the population of a village is 36000 . the total population of the village is ?
answer:
4000


question:
Problem: john makes $ 60 a week from his job . he earns a raise and now makes $ 90 a week . what is the % increase ?
answer:

50 %