I've got a maths exam next week and i need to know how to work this question out for my revision so please could u show me:

(a) From 5th May 2000 to 5th May 2001 a swimming club had the same members. Complete the table to show information about the ages of these members:

Mean (5fh May 2000) - 24 years 3 months

Range (5th May 2000) - 4 years 8 months

Mean (5th May 2001) - ........................

Range (5th May 2001 - ........................

(b) Mean - 17 years 5 months

Range - 2 years 0 months

A new member, aged 18 years 5 months is going to join the club.

What will happen to the mean age of the members?

What is the correct state ment?

It will increase by more than 1 year.

It will increase by exactly 1 year.

It will increase by less than a year.

It will stay the same.

It's not possible to tell.

Please can you show your working to all the questions please so that i understand it.