How do you do this? i’ve been having trouble with this for the past 10 mins

Horace's speedometer reads 60 miles per hour, but during a road test he finds that he was actually driving 58 mph. what is the percent error in horaces speedometer?

Fiona and her friends are playing a game by guessing where a coin will land when it is randomly dropped inside the square shown below. fiona guesses that the coin is likely to land in the blue area. which explains whether or not fiona is correct and why?

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?