Mr. sanchez’s class sold fruit pies for $1.32 each and mr. kelly’s class sold bottles of fruit juice for $1.77 each. together, the classes sold 90 items and earned $140.40 for their school.
(a) write and solve a system of equations that model the problem. show all your work.
(b) which class earned more money?
(c) how much more money did that class earn?

a)

b)  Mr. Kelly’s class.

c) $29.52

Step-by-step explanation:

a) Let's call:

s: the number of fruit pies sold by Mr. Sanchez’s class.

k: the number of fruit pies sold by Mr. Kelly’s class.

You can set up the following system of equations:

You can solve it by the Elimination method:

- Multiply the first equation by -1.32.

- Add both equations.

- Solve for k.

Then:

Susbtitute k into any of the original equations and solve for s:

b) The amount of money earned by Mr. Kelly’s class was:

The amount of money earned by Mr. Sanchez’s class was:

Then, the class that earned more money was: Mr. Kelly’s class.

c) Subtract both amounts of money:

a box 3 3/4 feet long or 4+ feet.

step-by-step explanation: