Here is the menu of Yunlai restaurant. Tom usually orders a fish, a cake, a cup of coffee and vegetable soup for lunch here. Today is a special day, these four only cost $24. So he will save ________ of the normal price．
Main Dish Dumplings $18 Fish $15 Pizza $16 | Soup Beef Soup $5 Vegetable Soup $5 Chicken Soup $5 |
Drink Tea $3 Coffee $4 Coke $3 | Dessert Cake $6 Pie $5 Ice Cream $4 |
