Question

An airplane takes off at 12 1/2 miles south of a city and flies due north at a constant speed of 170 mph. What is the planes position relative to the city after 45 minutes?

Answer 1

41 hour = 60 minutes

 45 min / 60 min = 0.75 hour

170 mph * 0.75 hr = 127.5 miles flown

127.5 - 12.5 = 115

 the plane is 115 miles north of the city