question: Lorie earns $10 per hour. Karen earns twice what Lorie earns. How much does Karen earn in two days if she works 3 hours per day?
answer: Karen earns $10 x 2 = $<<10*2=20>>20 per hour.
  So she earns $20 x 3 = $<<20*3=60>>60 per day.
  Thus, she earns $60 x 2 = $<<60*2=120>>120 in two days.
  #### 120