How many hours does it take to drive from Trenton, NJ to Harrisburg at 55 mph? Round to the nearest tenth hour.

You need to know the distance between the two cities, to use the formula distance = velocity * time from which you solve time = distance / velocity.

That distance is 127.0 miles (for one of the routes)

So, you have time = 127.0 miles / 55 miles/hour = 2.3 hours

That is about 2 hours and 18.5 minutes.

Answer: 2.3 hours