You're given the annual figures for the out go, so sum:
5.8/1.05 + 6/1.05^2 etc. (discount by 5% pa) = 25.47 or 25.5 rounded
Similarly you're given a project of student no.s by category & year and cost by category so you can multiply. (Note the order is 'reversed' with the years).
so sum:
5.75/1.05 + 5.85/1.05^2 etc. to give 29.689 or 29.7 rounded.
HTH.
edit: sorry, saw you needed this by today. hope it went well!
Last edited by a moderator: Sep 18, 2014