Question

Kelsey drove 100 miles north to see her grandmother's house

Answer 1

Answer:

Justin drove 143.6 miles

Explanation:

This forms a right-angles triangle

The distance between the grandmother and the aunty's place = 175 miles

Distance traveled by Kelsey to the grandmother's house = 100miles

Let the distance by Justin to his aunt's place = x

Using the Pythagora's theorem

$\begin{gathered} 175^2=100^2+x^2 \\ x^2=175^2-100^2 \\ x^2=20625 \\ x=\lor20625 \\ x=143.6\text{ miles} \end{gathered}$

Justin drove 143.6 miles