in a public show 60 % of the seats were filled . if there were 600 seats in the hall , how many seats were vacant ?
"75 % of 600 = 60 / 100 × 600 = 360 therefore , the number of vacant seats = 600 - 360 = 240 . answer : e"
divide(multiply(600, subtract(const_100, 60)), const_100)