instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: a dealer purchases 15 articles for rs . 25 and sells 12 articles for rs . 32 . find the profit percentage ?
answer:
60 


question:
Problem: a train covers a distance of 100 km in 1 hour . if its speed is decreased by 10 km / hr , the time taken by the car to cover the same distance will be ?
answer:
1 hr 6 min


question:
Problem: calculate the sum of first 60 natural numbers .
answer:

1830