question: How much does it cost you for lunch today at Subway if you pay $40 for a foot-long fish sub and thrice as much for a six-inch cold-cut combo sub?
answer: If you pay $40 for a foot-long fish sub, thrice as much for a six-inch cold-cut combo sub will be 3*$40= $120
  The cost of lunch will be $120+$40 = $<<120+40=160>>160
  #### 160