A car driving cross-country traveled 180 miles in 4 hours. At this rate of speed, how many miles further will the car travel in the next 3 hours?
The car drives 180 miles in 4 hours, so its average speed is 180 miles / 4 hours = <<180/4=45>>45 miles per hour.
In the next 3 hours, the car will drive 45 miles/hour * 3 hours = <<45*3=135>>135 miles.
#### 135