An airplane travels from east to west with a velocity 450 mi/hr relative to the Earth. At the same time the wind is blowing from west to east at 50 mi/hr. What is the speed of the plane with respect to the air?
A) 500 mi/hr
B) More than 450 mi/hr but less than 500 mi/hr
C) 450 mi/hr
D) More than 400 mi/hr but less than 450 mi/hr
E) 400 mi/hr

Question

Quizplus · Accepted Answer

The speed of the plane with respect to the air is the sum of its speed relative to the Earth and the speed of the wind, because they are in opposite directions. Thus, 450 mi/hr + 50 mi/hr = 500 mi/hr.

An Airplane Travels from East to West with a Velocity