There are three people in lee's family. The range if their shoe sizes are 3. Two people in her family wear size 6. Lee's size is not 6 or 3. What is Lee's shoe size?

Ok so two people were size 6 and the range is 3

It also says there are three people in Lee's family so that is four including Lee

So:

6:3=2

2*3=6

6+1=7

Lee wears a size 7 in shoes