Examples of this are:
2 and \(\frac{6}{3}\)
2 and \(\frac{12}{6}\)
4 and \(\frac{8}{2}\)
I'm guessing you have a work sheet going along with this which has actual images of containers. I've attached an example - if you can post the actual work sheet you're referring to I can edit this answer to correctly reflect your specific question.
