Question

Two airplanes have left the dallas airport. one airplane is 140 miles west of the airport and has an altitude of three miles, while the other airplane is 90 miles east of the airport and has an altitude of two miles. what is the distance between these two airplanes

Answer 1

To start you would count 140 miles and 90 miles and add that together because they are at least that far apart because they are in different directions with the measurement starting at the airport.  So you have 230 miles.  Then you would know that plan A is 3 miles up and plane B is only 2 miles up, so there's one more mile between them.  So you can add that and say 231 miles.