if 40 % of a number is equal to 2 / 3 of another number , what is the ratio of first number to the second number ?
"let 40 % of a = 2 / 3 b then , 40 * a / 100 = 2 * b / 3 a / b = 5 / 3 ans - a"
divide(divide(const_1, const_4), divide(40, const_100))