Twenty-five is equal to one more than eight times a number. What is the number?

To find the number in this equation, we need to set up and solve an algebraic equation.

Let's say the number we are looking for is represented by "x."

According to the problem, "twenty-five is equal to one more than eight times a number."
Translated into an equation, this can be written as: 25 = 8x + 1.

To solve for x, we can start by isolating the term with x on one side of the equation.

First, subtract 1 from both sides of the equation:

25 - 1 = 8x + 1 - 1
24 = 8x

Now, divide both sides of the equation by 8 to solve for x:

24/8 = 8x/8
3 = x

So, the number we are looking for is 3.