The task is to generate the correct answer for a given math problem.

Input: Consider Input: Problem: if a - b = 6 and a 2 + b 2 = 50 , find the value of ab .

Output: a ) 7


Input: Consider Input: Problem: the owner of a furniture shop charges his customer 10 % more than the cost price . if a customer paid rs . 8800 for a computer table , then what was the cost price of the computer table ?

Output: rs . 8000


Input: Consider Input: Problem: salad dressing p is made up of 30 % vinegar and 70 % oil , and salad dressing q contains 10 % vinegar and 90 % oil . if the two dressings are combined to produce a salad dressing that is 18 % vinegar , dressing p comprises what percentage of the new dressing ?


Output: 40 %