TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: robert ' s salary was decreased by 20 % and subsequently increased by 20 % . how much percentage does he lose ?

SOLUTION: 4 %

PROBLEM: Problem: a square with sides of 15 units each . what would be the area of the square . consider a square as a combination of two right angled triangles .

SOLUTION: 225', 'd ) 81', 'e ) 144'

PROBLEM: Problem: a restaurant spends one quarter of its monthly budget for rent and two thrid of the rest for food and beverages . what percentage of the budget does the restaurant spend for food and beverages ?

SOLUTION:
50 %