at the school fete, my friend spent eight dollars less than i, and together we spent a total of $22. how much did we each spend at the fete?

Question

then it says "at the same school fete, three adult rides and eight half price rides cost $21. how much was an adult ride?" pls someone help quick !

Answer 1

Hello Sarah,

Introduce variables and write down what's given:

1. Let's call s the spending of Sarah: s in $
2. Let's call f the spending of your friend: f in $

Now formulate the equations:

1. s + f = 22
2. f = s - 8

Solve the two equations, for instance by plugging in one variable:

1. s + f = 22
2. s + (s-8) = 22
3. 2*s - 8 =22
4. 2*s = 22 + 8
5. 2*s = 30
6. s = 15
7. f = s- 8 = 15-8 = 7

You spent $15 and your friend spent $7.

I hope the explanation helps you with similar problems.

Andy