$$45+15+45+15=120$$ minutes = $2$ hours  So, he will finish at $$11:00$$ A.M. 
James starts classes at $9$ A.M. He has $2$ classes, each class $$45$$ minutes long. After each class, he will take a $$15$$-minute break. When will he finish all $$2$$ classes? 

1. $10:20$ A.M. 
2. $11:00$ A.M. 
3. $11:10$ A.M. 
4. $11:20$ A.M. 
5. $11:30$ A.M. 