Answer:
Each scored 80 shots
My friend scored in total=720 points
I scored in total=400 points
Step-by-step explanation:
Each time you score you gain 4 less points than your friend so, you can do this equation
9X-320=5X-----> 9X=Points scored by your friend every shot
X=80 5X=Points scored by you every shot
X=amount of times each scored
9·80=720--->Your friend
5·80=400----> You
720-400=320 So its ok
