A road-trip double number line is shown below. The tick marks are evenly spaced and the line continues in the same pattern.
Hours: \(0\), \(1\), \(2\), \(3\), \(4\), \(5\)
Miles: \(0\), \(60\), \(120\), \(180\), \(240\), \(?\)
What distance in miles lines up with \(5~\text{hours}\)?
What this problem is really about
The evenly spaced ticks show that each one-hour move must add the same distance on the miles line. We’ll use a labeled aligned pair to identify miles per hour, then extend the pattern from four hours to the next tick. Multiplying the hourly distance by five offers a direct check of the final alignment.