I saw this question when I was teaching a student. It's not new and I've seen it a long time ago, but it always tickles me whenever I read it. The link is here but I'll type it out here too:
Two different sizes of tins of soup are shown. The mass of the soup and price are given below:
SMALL can : 415 g @ $1.04
LARGE can: 815 g @ $1.98
Which size of tin gives the better value? Show your working properly.
There are a few ways to answer this question correctly to get the marks:
...1. Find the cost per gram for each can of soup. Whichever gives you the lowest cost per gram gives the better value
2. Find the mass per unit dollar for each can of soup. This tells you how much soup you can get for each dollar spent. Whichever ...
