Vanson has a bunch of boxes that are all the same. He stacked 4 boxes, measured the stack, and found that it was 3 feet high..
a. How high will stack of 20 of these boxes be?
b. The ceiling in the room where Vanson is working is just a little more than 9 feet high. He wants to stack boxes from the floor to the ceiling. How many boxes will fit in one stack?