At a concert , there was three grades of seats available Grade A is the most expensive Grade B is the middle price and Grade C Seats are The Cheapest The Ratio of seat ticket prices was A: B : C = 5 : 3 :2 if the cheapest seats the concert £16 what were the cost of the other seat types? example 5/10 , = 1/2 middle price = 3/10 cheapest = 2/10 = 1/5​