instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: the ratio between the sale price and the cost price of an article is 12 : 7 . what is the ratio between the profit and the cost price of that article ?
answer:
5 : 7


question:
Problem: a 10 % stock yields 8 % . the market value of the stock is :
answer:
rs . 125


question:
Problem: if 5 % more is gained by selling an article for rs . 360 than by selling it for rs . 340 , the cost of the article is ?
answer:

400