Is there really 20% more?
I was buying groceries the other day and came across this. Not quite sure how that happened.
What information would be useful to figure this out?
The bottle’s shape doesn’t exactly fit into standard formulas, but I think that makes this more interesting. Also, the students will need to figure out that “20% more” means that 48 fl oz is 20% more than whatever was in the original sized bottle. This is a good opportunity to develop conceptual understanding of percents.
So, I didn’t actually buy the original bottle. However, I had an empty one at home for the test run.
How much money should the store charge for this bottle?
If the store charges $2.99 for a 40 ounce bottle, how much of a discount should they offer for the faulty product in this lesson?
What are your thoughts? How can this be improved?