Tamika is helping her father make shelves measuring 12x16" how many can be cut from a 48x72" piece of plywood so there is no waste?

1 answer

48/16 = 3
72/12 = 6

so I can draw 18 rectangles of 12 by 16 on a piece of 48 by 72

BUT, using a regular saw there will be a saw-cut waste and that changes the question.
I will assume your question is ignoring the sawdust.