Question

can someone help me by writing the equation

Answer 1

Lets call the time travelled for the car t1 and the time travelled for the bus t2. Then we can say:

\[t_{1} = t_{2}\]

We know that the bus is 20 mph slower than the car, so lets call the bus v2 and the car v1:

\[v_{2} = v_{1} - 20\]

Now you just need to know that the speed is simply the distance divided by the time.

\[v_{1} = \frac{300}{t_{1}}\]

\[v_{2} = \frac{180}{t_{2}}\]

Hope this helps/

Answer 2

d = distance ; c = car; b = bus ; s = speed ; t = time