Answer:
There were 65 stars on his cape.
Step-by-step explanation:
So, there are 87 neon stars in total, and we are using 1 star for his wand, so there are 86 stars left on his cape and hat. We'll label the hat as h.
The stars are 2 more then 3 times the stars on his cape, plus the stars on his hat, so the equation is:
4h+2=86
4h=84
h=21
21x3+2=65