prompt: A man drives 60 mph for 3 hours.  How fast would he have to drive over the next 2 hours to get an average speed of 70 mph?
messages.content: A man drives 60 mph for 3 hours.  How fast would he have to drive over the next 2 hours to get an average speed of 70 mph?
messages.role: user
messages.content: To have an average speed of 70 mph over 5 hours he needs to travel 70*5=<<70*5=350>>350 miles.
  He drove 60*3=<<60*3=180>>180 miles in the first 3 hours
  He needs to travel another 350-180=<<350-180=170>>170 miles over the next 2 hours.
  His speed needs to be 170/2=<<170/2=85>>85 mph
  #### 85
messages.role: assistant