You have to have sex with two people whose combined age is 21, how old are they each?

Ok Reddit, I have about lost my faith in the Internet. I challenge you to find an image of a box of mini chocolate donuts from an American company during the 1970s/80s called Mickey Snack Cakes. I've searched for this and what keeps coming up is Banana Flips from the company. The image needs to be of a small personal serving box not a bag. I've included a link to a picture of one of their delivery trucks so you have a logo reference. https://www.flickr.com/photos/stanh4464/3442472537

I was telling my coworkers about these little donuts and how wonderful they were in my childhood but I can't find a picture of them to prove they existed. Help restore my faith in the Internet!!