Patty ordered a pizza to be delivered. The bill was $\$$12.00. Patty pays $\$$15 and tells the delivery person to keep the change as a tip. What percent tip did she give?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Patty ordered a pizza to be delivered. The bill was $\$$12.00. Patty pays $\$$15 and tells the delivery person to keep the change as a tip. What percent tip did she give?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
25
Patty ordered a pizza to be delivered. The bill was $\$$12.00. Patty pays $\$$15 and tells the delivery person to keep the change as a tip. What percent tip did she give?
train