Truck driver drove 120 miles in 1 3/4 hours. what is the speed of the truck in miles per hour

120 miles ... 1 3/4 hours = 7/4 hours

x miles = ? ... 1 hour

If you would like to know what is the speed of the truck in miles per hour, you can calculate this using the following steps:

120 * 1 = 7/4 * x

120 = 7/4 * x / * 4/7

x = 120 * 4/7 = 480/7

x = 68 4/7 miles

Result: The speed of the truck is 68 4/7 miles per hour.