Question

Assuming a direct proportion between the distance and time, how far would they travel in 5 hours?

Answer 1

A family taking a road trip vacation travels 126 miles in 3 hours.

We can calculate the constant of proportionality as:

`\frac{126\text{ miles}}{3\text{ hours}}=42\text{ miles/hour}`

Then, in 5 hours they would travel:

`d=5\text{ hours}\cdot\frac{42\text{ miles}}{1\text{ hour}}=210\text{ miles}`

In 5 hours they would travel 210 miles.