## Algebra 1

$8 \space hours$
As we know Speed = distance $\div$ time $Speed = (300) \div (6)$ $Speed =50 \space mph$ New speed becomes: $50 +5 =55$ mph The time taken let us say $T$by Sandra with this new speed can be calculated as: $T= \dfrac{440}{55}$ $T =8 \space hours$