Answer:
She started with $20 :)
Step-by-step explanation:
If each model airplane was worth $4, and she bought 3. That means she bought 12 dollars worth of airplanes. If she received 8 dollars back, it means she started with $20.
Here's an equation explanation if this is better:
3 X 4 =12
12+ 8= 20
(12 dollars for how much she spent, 8 dollars change, 20 dollars to start with)
Hope this makes sense!! :)
