Final answer:
The statement suggests that the drinkers consume alcohol at a higher rate than the non-drinkers.
Step-by-step explanation:
The statement tells us that although only 30% of the population drinks, they consume a large portion (90%) of all alcohol. This suggests that the drinkers are consuming alcohol at a higher rate than the non-drinkers. It does not necessarily mean that two-thirds of the population are truants or that the remaining one-third spend all their time in school