nuffield economics & business answers to students book questions this file provides in enquiries 1 2 and 3 with some the go beyond what a student might reasonably be expected know while writing these opportunity has been used provide information that is more up date than textbook so answer will tell whether they are on right lines then supply relevant recent module challenges enquiry how do markets change page 162 your agenda spending necessities ie housing fuel food clothing fell as proportion of total alcohol tobacco also proportionately not all other categories increased significant possible cause changes could increasing real incomes having bought need people have money spend things such travel nice for their homes various leisure pursuits fall may due better knowledge potential health problems trends percentages 1987 1988 reasons 16