a plane flying with a tailwind flew at a speed of 430 mph, relative to the ground. When flying against the tailwind, it flew at a speed of 330 mph. Express these relationships as equations. Let x be the speed of the plane and let y be the speed of the wind

Question

a plane flying with a tailwind flew at a speed of 430 mph, relative to the ground.  When flying against the tailwind, it flew at a speed of 330 mph.  Express these relationships as equations.  Let x be the speed of the plane and let y be the speed of the wind

anonymous · Answer

help please

johnweldon1993 · Answer

Well we're letting x = the speed of the plane...and y = the speed of the wind

so with the tailwind (adding the wind)

x + y = 430

against the tailwind (subtracting the wind)

x - y = 330

understandable?

anonymous · Answer

oh okay. that makes sense! thank you :)

johnweldon1993 · Answer

no problem! :)