Misty's favorite number is 3 times smaller than Glory's, meaning her favorite number is 450 / 3 = <<450/3=150>>150

The sum of their favorite numbers is 150 + 450 = <<150+450=600>>600

# Answer

600
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Misty's favorite number is 3 times smaller than Glory's favorite number. If Glory's favorite number is 450, what's the sum of their favorite numbers?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
600
Misty's favorite number is 3 times smaller than Glory's favorite number. If Glory's favorite number is 450, what's the sum of their favorite numbers?
train