TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: what ratio must a shopkeeper mix peas and soybean of rs . 16 and rs . 25 / kg , as to obtain a mixture of rs . 21.50 ?

SOLUTION: 7 : 11

PROBLEM: Problem: whats the reminder when 58 , 458,965 , 231,457 , 895,684 , 525,465 , 985,445 is divided by 16

SOLUTION: 5

PROBLEM: Problem: what is the normal price of an article sold at $ 72 after two successive discounts of 10 % and 20 % ?

SOLUTION:
$ 100