SYSTEMS OF EQUATIONS AND MATRICES
Solving a word problem using a 3x3 system of linear equations......
Elsa, Josh, and Amanda sold items for a fundraiser. They sold cookies, candy, and cupcakes. The table below gives the number of boxes of each item sold by
each person. They didn't sell any other items.
Number of boxes sold
Cookies Candy Cupcakes
Elsa
2
4
3
Josh
5
4
8
Amanda
4
2
5
If Elsa sold $37 in total, Josh sold $71, and Amanda sold $45, what is the cost for a box of each item?
Cost for a box of cookies:
Cost for a box of candy:
Cost for a box of cupcakes: