prompt: Mark gets a new phone plan that is 30% more expensive than his old plan.  If his old plan was $150 a month how much does his new plan cost?
messages.content: Mark gets a new phone plan that is 30% more expensive than his old plan.  If his old plan was $150 a month how much does his new plan cost?
messages.role: user
messages.content: His new plan is 150*.3=$<<150*.3=45>>45 more expensive than his old plan
  So his new plan is 150+45=$<<150+45=195>>195
  #### 195
messages.role: assistant