prompt: Barry wants to make a huge salad using only cucumbers and tomatoes. He will use a total of 280 pieces of vegetables. If there are thrice as many tomatoes as cucumbers, how many cucumbers will be used in the salad?
messages.content: Barry wants to make a huge salad using only cucumbers and tomatoes. He will use a total of 280 pieces of vegetables. If there are thrice as many tomatoes as cucumbers, how many cucumbers will be used in the salad?
messages.role: user
messages.content: Let c be the number of cucumbers and t the number of tomatoes.
  The total is the sum of the number of cucumbers and that of tomatoes, which is c + t = 280 piece of vegetables
  Since there are thrice as many tomatoes as cucumbers, this means c =t/3
  Therefore 3*c = t.
  The sum will therefore be c + 3*c = 280 pieces of vegetables
  This means that 4*c = 280 vegetables
  Therefore c = 280/4 = <<280/4=70>>70 cucumbers.
  #### 70
messages.role: assistant