conversations.from: human
conversations.value: Shania is designing her own dress, and decides to make it a longer dress by extending the dress by 50% of its original length. She also adds 20cm to the bottom of the dress with a lace trim. If the final design is 140cm long then how long, in centimeters, was the dress in its original design?
conversations.from: assistant
conversations.value: Without the lace trim, the dress is 140cm full length – 20cm lace trim = 120cm.
  Let's assume the dress was originally x cm in length.
  Half the original length is x/2.
  Adding the original length and the extended length, which is x+x/2 = 120
  3/2x = 120
  The orginal length is x= 80 cm