# Dan and Kate used two different treadmills to exercise. The total distance walked between them was 3.7 miles. How do you state what quantity the variable x represents and express the second quantity in terms of x?

##### 1 Answer

Mar 19, 2017

If

#### Explanation:

Since we are not given any reason to do otherwise, we can define

Now, to find an expression for Kate's walk. You can do it this way:

Now let

Since the total distance is 3.7 miles, it must be that

So,

There is your second expression. The distance Kate walks is