Lookup a total from a range to use as part of a formula

Hi All

I'm not sure if the thread title makes sense so I'll expleain what I am trying to do;

I have a total premium amount to be multiplied by a percentage depending on a client's age. I have cells set up with the percentages for the age ranges (eg 30-35, 36-45, etc), and a cell stating a person's age.

Is there a formula I can use to make the final total cell = premium * percentage based on age?

If I haven't explained the problem very well please let me know, but any help is much appreciated!

SpockIOM