Question

Ast week Jill ran 31 miles more than Amanda. Jill ran 42 miles. How many miles did Amanda run?

Answer 1

Amanda ran `11` miles

Explanation:

Set up an equation

• `J =` Jill
• `A =` Amanda

We know that Jill ran `31` more miles than Amanda, so we can write the equation like this.

`A + 31 = J`

Then, we are told that Jill ran `42` miles, so we can plug in that number to her variable (J).

`A + 31 = 42`

Subtract `31` from both sides.

`A = 11`

Amanda ran `11` miles.