Question 541010
n=train 
b= bus
r=speed
t=time
n+b=2 hours

r*n=70
s*b=30
s=r-24
bus time = 5/6 hour ,   train time= 7/6
train speed = 60,   bus speed = 36
check
60*7/6=70
70=70
check
5/6*36=30
30=30