human
Marissa has 4.5 feet of ribbon that she wants to use to tie some boxes. If 1 foot of ribbon is left after Marissa uses 0.7 feet of ribbon to tie each box, find out how many boxes she tied?
assistant
How many feet of ribbon did Marissa use? ** Marissa used a total of 4.5 - 1 = <<4.5-1=3.5>>3.5 feet of ribbon to the boxes.
How many boxes did Marissa tie? ** Thus, there were 3.5/0.7 = <<3.5/0.7=5>>5 boxes.
#### 5