At a local shelter, large dogs can be adopted for 10$ each.Small dogs can be adopted for 5$ each. There are 17 large dogs available for adoption. If all the dogs are adopted, the shelter will make 215$. How many small dogs are at the shelter?
1.Find the hidden questions.Write equations to solve
2. How many small dogs are at the shelter? Use the answers to the hidden questions and equations to solve

(4th grade math)