instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: tourist purchased a total of 30 travelers checks in $ 50 and $ 100 denominations . the total worth of the travelers checks is $ 1800 . how many checks of $ 50 denominations can he spend so that average amount ( arithmetic mean ) of the remaining travelers checks is $ 100 ?
answer:
2


question:
Problem: arjun started a business with rs . 20,000 and is joined afterwards by anoop with rs . 80 , 000 . after how many months did anoop join if the profits at the end of the year are divided equally ?
answer:
9


question:
Problem: a shop owner sells 60 mtr of cloth and gains sp of 10 mtrs . find the gain % ?
answer:

20 %