Final answer:
To find four consecutive numbers that equal 80, you can use algebra. The consecutive numbers are 18, 19, 20, and 21.
Step-by-step explanation:
To find four consecutive numbers that equal 80, we can use algebra. Let's define the first number as x. The second number would be x + 1, the third number x + 2, and the fourth number x + 3. We can set up an equation: x + (x + 1) + (x + 2) + (x + 3) = 80. Solving this equation, we find that x = 18. Therefore, the consecutive numbers are 18, 19, 20, and 21.