Question

25% of what number is 10?

Answer 1

`40`

Explanation:

We don't know the number yet, so we can model it with the variable `x`. The question now turns into:

`25%` of `x` is `10`. What is `x`?

The key realization is that `25%` is the same as `1/4`, so we can now construct an equation:

`1/4x=10`

This is saying one-fourth, or `25%`, of a number `x`, is equal to `10`.

Let's multiply both sides by `4` to get

`x=40`

Therefore, `25%` of `40` is `10`.

Hope this helps!