my mom is 48 and i'm 30 do you think we are close in age?

No, you and your mom are not close in age. There is an age gap of 18 years between you.

No, you and your mom are not close in age. There is an age difference of 18 years between both of you.

No, your mom and you are not close in age. There is an 18-year age difference between you and your mom. To calculate the age difference between two people, you subtract the birth year of one person from the birth year of the other person. In this case, if your mom is 48 years old, it means she was born 48 years ago. If you are 30 years old, it means you were born 30 years ago. By subtracting 30 from 48, you get an age difference of 18 years.