Let's say Rhonda has m marbles.

The total number of marbles that Ammon has is m+<<+55=55>>55

Amon & Rhonda combined have m+(m+55) = 215

This means the total number of marbles they have together is 2m+55 = 215

2m=215-55

The total number of marbles that Rhonda has is m=160/2

Rhonda has m=80 marbles.

# Answer

80
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Amon & Rhonda combined have 215 marbles. If Amon owns 55 marbles more than Rhonda, how many marbles does Rhonda have?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
80
Amon & Rhonda combined have 215 marbles. If Amon owns 55 marbles more than Rhonda, how many marbles does Rhonda have?
train