if 60 % of a number is equal to one half of another number , what is the ratio of first number to the second number ?
"let 60 % of a = 1 / 2 b . then , 60 a / 100 = 1 b / 2 = > 3 a / 5 = 1 b / 2 a / b = ( 1 / 2 * 5 / 3 ) = 5 / 6 a : b = 5 : 6 . answer : b"
divide(divide(const_1, const_4), divide(60, const_100))