Question

An aeroplane flies 3500km in the same time a train covers 600km. If the speed of the aeroplane is 50km more than five times the speed of the train, what are the speeds of the train and the aeroplane

Answer 1

let the time be x
then,
speed =3500/x of aeroplane
speed =600/x of train
5(600/x)+50=3500/x
3000/×+50=3500/x
500/x=50
10/x=1
x=1
speed of train=600km per hour
speed of aeroplane is 3500km per hour