if 20 % of a number is equal to one - third of another number , what is the ratio of first number to the second number ?
"let 20 % of a = 1 / 3 b then 20 a / 100 = 1 b / 3 a / 5 = b / 3 a / b = 5 / 3 a : b = 5 : 3 answer is c"
divide(divide(const_1, const_4), divide(20, const_100))