Kirsty has 0.45 × 30 = $<<0.45*30=13.50>>13.50 to spare to buy her models.

She can only buy 13.50 ÷ 0.50 = <<13.50/0.50=27>>27 models as the price of each individual model has increased.

# Answer

27
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Kirsty collects small models of animals. The last time she bought some, each one cost $0.45. She saves enough to buy 30 models, but when she goes to the shop, she finds out that the price had increased to $0.50. How many models can she buy now?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
27
Kirsty collects small models of animals. The last time she bought some, each one cost $0.45. She saves enough to buy 30 models, but when she goes to the shop, she finds out that the price had increased to $0.50. How many models can she buy now?
train