A teacher asks a student to find 54 of a number. Instead, the student finds 45 of the number. Her answer is 36 less than the correct answer. What is the correct answer?
45 of a number refers to 180, and 54 refers to 216. So 100 of a number is 400 and 1 of a number is 4. If 54x - 45x = 36, just plug in 4 and double check: 54(4) - 45(4) = 36 or 216 - 180 = 36, which is true.
