It's okay, but I'm having trouble with helping the costumers. They all either know their shoe size or the size of their foot.
Yeah, sure. This one is Size 5 and the foot length is about 9 inches and the other one is a Size 11 and the foot length is 11, I'm pretty sure.
Hold on. Would you mind telling me the shoe size and the length of the feet of the people who fit them?
Hi, can I check out these two pairs of shoes?
Hm, so the shoe size depends on the foot length. The difference between the two lengths is two and the shoe sizes are 6 sizes apart. I think I can figure this out.
Thank you, sir. I can check you out over her real quick.
A little while later...
I think I got it. Using the last costumer's situation, you could find out that the shoe size will increase by three for every inch that a foot is. So, using the shoe size 5 and the foot length of 9 inches, to get to size 11, that is 6 shoe sizes in between. That means the foot length would need to be 2 inches more than 9 inches in order to have size 6.
Oh, that makes sense. Here comes another costumer.
Hi, I need help finding my shoe size. My foot is 12 inches long. What shoe size would I be?
You would fit size 14.
Hmm, so if a size 11 fits a 11 inch foot, 12 inches would fit a shoe size thats 3 more than 11.
Yeah, basically. Just like with the first costumer.
No problem! See you later.
So, basically, for every inch that a foot is, the size will increase by 3?
Well, thanks for helping me figure that out! Have a nice day!