A caterer is making cookie trays for upcoming holiday parties. This morning, she made one small tray and one large tray, which contain a total of 69 cookies. In the afternoon, she made one small tray and four large trays, which contain a total of 204 cookies. How many cookies do the different size trays contain?
Subtract one small and one large tray from one small and four large trays to get the number of cookies on three large trays: 204 - 69 = 135
Divide 135 by three (135 is the number of cookies on three large trays): 135 ÷ 3 = 45
Small Tray:
One small and one large tray contain a total of 69 cookies and a large tray contains 45 cookies. Therefore, you have to subtract the 45 cookies from the total of the 69 cookies to get the number of cookies on a small tray: 69 - 45 = 24
