We were given about 15 pages of information, both textual and numerical then asked to write a concise report on it. It was extremely time pressured and required you to be able to compute a lot of information very quickly. I would recommend you spend the first 20 mins simply reading the information, then 30 mins writing it, then 10 mins checking for grammatical and spelling errors. I wouldn't worry too much if you thought it went terribly (I did!), as I imagine they don't expect too much from first-year undergraduates.