Question

Two planes left an airport at noon. One flew east and another flew west at twice the speed. After 3 hours the planes were 2700 mi apart. How fast was each plane flying?

Answer 1

Something tells me it involves a formula like this:
x+2y=2700

Or is it x+2x=2700?

Thanks.

Answer 2

I have no clue.....

Answer 3

speed = Distance/ rate

Answer 4

So S = 2700/r?

Answer 5

900 mph 2700/3

Answer 6

go it?

Answer 7

got*

Answer 8

Says in my answer sheet that it's 300 and 600 mph

Answer 9

waitttttt hollup i overlooked twice as fast lemme redo it playa

Answer 10

@aliboo997 @jim_thompson5910

Answer 11

Hmm....searching google, has some good info

Answer 12

Ok got it...was very simple. Don't know why I didn't get it sooner. Thanks for your help

Answer 13

2x+x=900

3x=900

x=300

Answer: 300 and 600

For those who need help

Answer 14

why is it 2x+x?

Answer 15

Because if you solve for x, you can easily solve for 2x. So it would be best to combine the speeds of the two planes.