Final answer:
Three numbers that round to 54.5 when rounded to the nearest tenth are 54.45, 54.55, and 54.55.
Step-by-step explanation:
When rounding to the nearest tenth, we look at the digit in the hundredths place. If the digit is 5 or greater, we round up. If the digit is less than 5, we round down. In this case, we want to find three numbers that round to 54.5 when rounded to the nearest tenth. One possible set of numbers is 54.45, 54.55, and 54.55. When rounded to the nearest tenth, all of these numbers round to 54.5.