walks from Town B to Town A along the same road at an average speed of 5 km/ h.

The distance along the road between the two towns is 15 km and they each start off

at the same time.

a Write two linear equations to model the two journeys. In each case, relate the

distance in kilometres from Town A to the time travelled in hours.

b Solve the equations simultaneously using a graphical method to nd the time at

which they meet along the road between the two towns.

c How far has each travelled before they meet?

This is actually from the standard course but I think there's more activity on maths thread in comparison to the standard thread which is why I'm posting on here.

So fat my two equations are:

d=20t (for tom)

d= 15-5t (for Julia)

When I solve them simultaneously I am not the getting the right answers and they don't even make sense because my answers say they will meet at 33km or something like that, which obviously can't work if the road is 15km.

Anyway, appreciate all the help