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?
assistant
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