Answer:
The truck's speed is 68 6/7 miles per hour
Explanation:
Defining distance:
Distance can be defined as the product of rate and time:
Distance = rate * time
Since we're given the driver's distance (120.5 miles) and time (1 3/4 hours), we can determine the truck's speed (r) by dividing the distance by the time:
- For the sake of the problem, we can use the decimal of 1 3/4, which is 1.75.
Distance / time = rate
120.5 miles / 1.75 hours = rate (miles per hour)
120.5 / 1.75 = r
68.85714286 = r
68 6/7 = r
Thus, the truck's speed is 68 6/7 miles per hour.