The bar graph displays the percentage of Australian farms that were

Official Explanation

1. Was less than 30%. When estimating the value of each bar, keep in mind that you won't be able to prove that the total number of farms victimized is greater than 30%. That's because the legend of the graph notes that some farms may be double-counted on this graph, meaning that even if the sum of the bars is greater than 30% the total percentage may be lower than that. (For example, if every single farm that was a victim of Livestock Theft was also counted in at least one other category, then that 4.7% would have to be subtracted from the combined total.) With this in mind, you should try to prove that the figure is less than 30%. If you round up your estimates of each bar you should find that the sum is still less than 30, meaning that you can safely conclude that the total percentage is less than 30%.

2. More than half. Here you shouldn't have to actually calculate - since the highest and second-highest categories each involve theft, you can "pair off" the theft and non-theft categories to make comparisons. Machinery/equipment theft is slightly more than illegal hunting/fishing and theft of fuel is slightly more than illegal dumping (all leaving "livestock theft's nearly 5% alone). And theft of tools is more than damage/vandalism, leaving just farm residence burglary and sabotage to "outweigh" the remaining four categories. Clearly it won't be enough, so since theft occurs more than non-theft, you can conclude that the answer is more than half.

3. 3 times. Livestock theft's number is more than 4.5% and theft of produce is between 1 and 1.5%, so the only plausible answer choice is 3 times.