the mark up between ` ` normal plan ' ' price and ` ` premium plan ' ' price is 30 percent of the ` ` normal plan ' ' price . the markup is what percent of the ` ` premium plan ' ' price ? ( markup = difference between normal and premium price plans )
a = price for normal plan b = price for premium plan mp = 0.5 a b = a + 0.5 a = 1.5 a hence markup = b - a = 0.5 / 1.5 b = 1 / 3 b . hence mp is 33.33 % of b answer c
subtract(const_1, divide(30, const_100))