I think I know the answer but, I just want to make sure...

We found a old paper ticket from the late 80's with 2 days left. These are very old. The days with only MK and EP. My question is, can use the adult one for me (which was originally used by my mom) and the child one for my DD (which was originally used for me)? And if yes, would it be considered a 1 park or park hopper ticket? If Park Hopper ticket, would I only be able to hop to MK and EP which was the only parks when the original tickets were issued?

I know these are probably very silly and I'm feeling VERY wet behind the ears for asking this question!