Answer: The amount of cookies that were sold at the fundraiser was 80 chocolate chip cookies and 40 oatmeal raisin cookies.
Step-by-step explanation:
Let's denote the number of chocolate chip cookies sold as x and the number of oatmeal raisin cookies sold as y.
Given:
The chocolate chip cookies are sold for $2 each.
The oatmeal raisin cookies are sold for $1.50 each.
A total of 120 cookies were sold.
The earnings amounted to $220.
We can set up a system of equations based on the information provided:
The total number of cookies sold is 120: x+y=120
The total earnings from selling the cookies is $220: 2x+1.5y=220
Now, we can solve this system of equations to find the values of x and y.
The solution to the system of equations is:
x=80 (number of chocolate chip cookies sold)
y=40 (number of oatmeal raisin cookies sold)