Question

Rohit travels 300 km to her home partly by train and partly by bus she takes 4 hours to travel 60 km by train and the remaining by bus if she travel hundred kilometre by train and the remaining by bus she takes 10 minutes longer find the speed of the train and the bus separately​

Answer 1

speed of train=60km/h

speed of bus=80km/h

for solution plz see the fig

Answer 2

D=S÷T

60/X+240/Y=4

100/X+200/Y=25/6

1/X=U,1/Y=V

60U+240V=4

100U+200V=25/6

U+2V=1/24

15U+30V=5/8

30V=3/8

V=1/8

U+1/40=1/24

U=1/24-1/40

U=2/120

U=1/60

TRain sp=60

Bus sp=80