# It took Sandy two hours to jog 13 miles. She ran 7 1/2 miles in the first hour. How far did she run during two hours the second hour?

Oct 27, 2017

$5 \frac{1}{2} \text{ miles}$

#### Explanation:

$\text{require to calculate}$

$13 - 7 \frac{1}{2} \leftarrow \text{ gives distance remaining}$

$\text{note that } 7 \frac{1}{2} = 7 + \frac{1}{2}$

$\Rightarrow 13 - \left(7 + \frac{1}{2}\right)$

$= 13 - 7 - \frac{1}{2}$

$= 6 - \frac{1}{2}$

$= 5 \frac{1}{2} \text{ miles"larr" in the second hour}$

Oct 27, 2017

She ran $5 \frac{1}{2}$ miles the second hour.

#### Explanation:

$13$ miles - $7 \frac{1}{2}$ miles $= 5 \frac{1}{2}$ miles.

I assumed the question should be:
$\text{How far did she run during "cancel("two hours")"the second hour?}$