Final answer:
To determine the amount of jelly needed for 65 sandwiches, a proportional relationship is used, resulting in 29.25 fl oz of jelly required.
Step-by-step explanation:
The student's question pertains to a proportional relationship between the amount of jelly used and the number of sandwiches made. Given the initial quantity of jelly (18 fl oz) used for making 40 peanut butter and jelly sandwiches, we can set up a proportion to determine the amount of jelly required to make 65 sandwiches.
Firstly, we find the jelly-to-sandwich ratio:
18 fl oz / 40 sandwiches = jelly per sandwich.
Next, we use this ratio to calculate the jelly needed for 65 sandwiches:
Jelly per sandwich x 65 sandwiches = total jelly required.
Following through with the calculations:
- Calculate the jelly needed for one sandwich: 18 fl oz / 40 = 0.45 fl oz per sandwich.
- Multiply the jelly per sandwich by the number of sandwiches needed: 0.45 fl oz x 65 = 29.25 fl oz.
Therefore, Andy will require 29.25 fl oz of jelly to make 65 peanut butter and jelly sandwiches.