Adam could fit 10 action figures on each shelf in his room. His room has could hold 8 action figures. How many total shelves did his room have?
Let's denote the number of shelves in Adam's room by s. Then the number of action figures that his room could hold is 8s. 

The number of action figures that Adam could fit on each shelf is 10. 

Therefore the total number of action figures that Adam could fit in his room is 

10s=80. 

Therefore the answer (numeric) is: 

s=80/10=8