APART FROM CHAZZ
hi
anyone a wizz at math's, got to sit some test's for an interview
http://www.psychometric-success.com/...20Test%201.pdf
most of the stuff is fine but its been a good few years since ive used this sort of stuff and my head's about to explode with questions 17-21 just can't get my head round the pie chart percentage's
so if anyone has an easy way of doing this with basic calculator..mine doesn't do % or fractions

or is it worth my spending out on a posh one?
tks