if 0.25 of a number is equal to 0.05 of another number , the ratio of the numbers is :
"0.25 a = 0.05 b - > a / b = 0.05 / 0.25 = 5 / 25 = 1 / 5 : . a : b = 1 : 5 answer : c"
divide(multiply(0.05, const_100), multiply(0.25, const_100))