Answer:
15 miles in 120 minutes
Explanation:
We can start by using the unit rate of Alex's running speed:
5 miles / 40 minutes = 0.125 miles per minute
This means that Alex runs at a speed of 0.125 miles per minute.
To find out how many miles he can run in 120 minutes, we can multiply his speed by the number of minutes:
0.125 miles/minute × 120 minutes = 15 miles
Therefore, if Alex runs at the same rate, he can run 15 miles in 120 minutes.