please provider answer? A train travels 160160 km in the same time that a plane covers 720720 km. If the speed of the plane is 2020 km per hr less than 55 times the speed of the? train, find both speeds
speed of plan is 20kmph less than 5 times speed of train p=5r-20
we notice that 160 times 4.5=720 times first equaton by 4.5
720=4.5rt 720=pt set equal 4.5rt=pt divide both sides by t 4.5r=p sub p=5r-20 for p 4.5r=5r-20 minus 4.5r from both sides 0=0.5r-20 add 20 to both sides 20=0.5r times 2 both sides 40=r
