The task is to generate the correct answer for a given math 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 ?
7 : 11

Problem: a number x is 5 times another number y . the percentage that y is less than x is
80 %

Problem: a number of 55 marbles is to be divided and contain with boxes . if each box is to contain 3 , 4 , or 5 marbles , what is the largest possible number of boxes ?
1