FRA

If question requires us to recommend interest rate hedging derivative based on cost , and fra is also included in the question.So do we need to do the amount calculation for the interest cost +/- payment/receipt to bank or can we directly just quote a percentage based on FRA rate +/- basis points which i suppose gonna be one line answer(examiner did it like this way in article).Will i get full marks for it? ( I calculate cost of all the derivatives in annual percentage terms)