<human>:  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?
<bot>: How long is the dress without the lace trim? ** Without the lace trim, the dress is 140cm full length – 20cm lace trim = <<140-20=120>>120cm.
How long was the dress originally? ** Let's assume the dress was originally x cm in length.
How long is half the original length? ** Half the original length is x/2.
How long is the dress in its original design? ** Adding the original length and the extended length, which is x+x/2 = 120
How long is the dress in its original design? ** 3/2x = 120
How long was the dress originally? ** The orginal length is x= 80 cm
#### 80