Write a system of equations for the problem, and then solve the system.
-If a plane can travel 310 miles per hour with the wind and only 290 miles per hour against the wind, find the speed of the wind and the speed of the plane in still air.
A) Plane: 300 mph; wind: 20 mph
B) Plane: 400 mph; wind: 10 mph
C) Plane: 300 mph; wind: 10 mph
D) Plane: 10 mph; wind: 300 mph

Question

Quizplus · Accepted Answer

The system of equations is: p + w = 310 and p - w = 290. Solving these gives p = 300 mph and w = 10 mph.

Write a System of Equations for the Problem, and Then