Assuming that the driving time of cars A and B is t, then
56t=48t+32
t=4
Then s = 2 * 56t = 448km.
2. Suppose that car A travels x every hour.
kilometre (km)
Then you can know it by four and a half hours' drive from the title A bus to the West Station.
S = 4.5x times
The equation available is
(s+3 1.5)/x = s-3 1.5/(x- 12)
)
Available x=
3. suppose the speed of vehicle a is x.
Car b is y.
therefore
900=(x+Y)* 18 minutes
180(x-y)=900
4. suppose the distance is s.
therefore
(s+ 180)/90 =(s- 180)/60
s=900
5.