Let the speed of the plane which flew east is x miles per hour .
And the speed of the plane fles west is twice of the speed of the plane flew east. THerefore speed of plane flew west is 2x miles per hour .
According to question
[tex]3*x + 2x*3 = 2700[/tex]
[tex]3x+6x=2700[/tex]
[tex]9x=2700[/tex]
Dividing both sides by 9
[tex]x= 300 miles / hour[/tex]Therefore speed of the plane flew east is 300miles/hour and speed of the plane flew west is 600miles/hour .
