Office Weighings Puzzle

The Puzzle:

Office Weighings

You have a balance and the following items of which you know the weights: a small coin weighing 5g, a pen weighing 10g, an eraser weighing 20g, a holepunch weighing 40g, and a stapler weighing 80g.

How many different possible weights can you measure with these items?

Do you have the answer? Check against our solution!