Answer:
Christopher spent $59.35 on his 2 brand new shoes.
Explanation:
Christopher has 153.20. He saved 34.50. So that means he saved the 34.5 out of the 153.2. So to find the sum that he spent you subtract.
153.20-34.50=118.70
So he has 118.70 to spend. He spend the rest on two shoes. If the money is gone you simply divide by two and have you're answer.
118.70/2=59.35
Hope it helps!