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anonymous
 5 years ago
A Piper Cub has an average air speed that is 10mph faster than a Cessna 150 airplane. If the combined distance traveled by these two small planes is 690 miles after 3 hr, what is the average speed of each plane?
anonymous
 5 years ago
A Piper Cub has an average air speed that is 10mph faster than a Cessna 150 airplane. If the combined distance traveled by these two small planes is 690 miles after 3 hr, what is the average speed of each plane?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0let x be speed 1, y be speed 2. 3(x+y) = 690. x = y + 10. So Y=110 X= 120 is this correct?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0well im doing it differently

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0do you agree that v1 = 10 + v2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0v1 is the speed of the piper cub

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok the distance we know is d = v* t , where v is the speed or rate, like d = rt

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so the total distance you add the distances of the two planes , so v1*3 + (10+v2) *3 = 690

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so you have a system of equations ,

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0since you know that v1 = 10 + v2, you can substitute that into the second equation

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0(10 + v2) *3 + (10+v2)*3 = 690

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0maybe someone should check my work

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0hmm, so The first one I did was wrong

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0we had v1 *3 + v2 *3 = 690

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0substitute v1 = 10 + v2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.03 ( 10 + v2 + v2) = 690

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh, I got 120, let me check my math

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you did everything right

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0AWESOME! thank you sooo much!
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