Final answer:
To determine the number of dozen cookies needed for 225 guests with each having 5 cookies, first calculate the total amount of cookies (1125), then divide by 12 to find the number of dozens (93.75), and round up to the nearest whole number, resulting in 94 dozen required.
Step-by-step explanation:
The question from the student is concerned with determining how many dozen cookies Andy and Kristina need to order for their wedding if they have 225 guests and they want each guest to be able to have 5 cookies. To solve this, first calculate the total number of cookies needed by multiplying the number of guests by the number of cookies per guest:
225 guests * 5 cookies/guest = 1125 cookies
Since one dozen is equal to 12 cookies, divide the total number of cookies by 12 to find out how many dozen are needed:
1125 cookies ÷ 12 cookies/dozen = 93.75 dozen
Since you cannot order a fraction of a dozen cookies, you would need to round up to the nearest whole number. Therefore, Andy and Kristina need to order 94 dozen cookies for their wedding.