TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: 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 ?

SOLUTION: 5 : 7

PROBLEM: Problem: the marks obtained by vijay and amith are in the ratio 8 : 5 and those obtained by amith and abhishek in the ratio of 3 : 2 . the marks obtained by vijay and abhishek are in the ratio of ?

SOLUTION: 12 : 5

PROBLEM: Problem: the length of a rectangle is halved , while its breadth is tripled . watis the % change in area ?

SOLUTION:
50 %