prompt: 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?
messages.content: 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?
messages.role: user
messages.content: 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.
  #### 27
messages.role: assistant