SOLUTION: if plane a travels 2400 kilometers at a certain speed. plane b travels 1800 kilometers at a speed 50km/hr faster than plane a in two hours less time. find the speed of each plane
Algebra.Com
Question 924591: if plane a travels 2400 kilometers at a certain speed. plane b travels 1800 kilometers at a speed 50km/hr faster than plane a in two hours less time. find the speed of each plane
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
if plane a travels 2400 kilometers at a certain speed. plane b travels 1800 kilometers at a speed 50km/hr faster than plane a in two hours less time. find the speed of each plane
***
let x=speed of plane a
x+50=speed of plane b
travel time = distance/speed
..
lcd:x(x+50)
2400(x+50)-x(1800)=2x(x+50)
2400x+120000-1800x=2x^2+100x
120000+600x=2x^2+100x
2x^2-500x-120000=0
x^2-250x-60000=0
(x+150)(x-400)=0
x=400
x+50=450
..
speed of plane a=400 km/hr
speed of plane b=450 km/hr
RELATED QUESTIONS
Airplane A travels 2400 km at a certain speed. Plane B travels 1800 km at a speed 50 km/h (answered by josgarithmetic,MathTherapy)
Airplane A travels 2800 km at a certain speed. Plane B travels 2000 km at a speed 50... (answered by Fombitz)
Airplane A travels 2800 km at a certain speed. Airplane B travels 2000 km at a speed 50... (answered by ptaylor)
Airplane A travels 1400km at a certain speed. Plane B travels 1000km at a speed 50 km/h... (answered by ankor@dixie-net.com)
Airplane A travels 2800
km at a certain speed. Plane B travels 2000
km at a speed (answered by Alan3354,ankor@dixie-net.com)
Airplane A travels 1400 km at a certain speed. Plane B travels 1000 km at a speed 50 km/... (answered by jorel555)
Airplane A travels 6300 km at a certain speed. Plane B travels 4500 km at a speed 50 km/h (answered by josgarithmetic)
word problems Airplane A travels 1400 km at a certain speed. Plane B travels 1000 km at... (answered by jorel1380)
Airplane A travels 1400 km at a certain speed. Plane B travels 1000 km at a speed of 50... (answered by mananth)