Question

At maximum speed, an airplane travels 1680 miles against the wind in 5 hours. Flying with the wind, the plane can travel the same distance in 4 hours.

Let x be the maximum speed of the plane and y be the speed of the wind. What is the speed of the plane with no wind?

Answer 1

let , m is the speed of plane with no wind

1680/5=336
1680/4=420

x=420=m+y
m-y=336
hence, 2*m= 756
hence,m=378 miles/ hour

Answer 2

so with no wind its 378?

Answer 3

yes
i think so..

Answer 4

yea i got it right thank you

Answer 5

you are most welcome..

Answer 6

can u help me with another question that was like the last one i posted up

Answer 7

can u paste the link?..sry i cannt find..

Answer 8

i just posted it up

Answer 9

ceaser i cannt find the qwestion you are talking about...