18. Tom is travelling on a bus that is moving at a uniform speed of 30 km/h. If he alights at Bus Stop A, he will walk home by Route A which is 800 m away from his flat.
He can also alight 1 km down the road at Bus Stop B and take the 730 m Route B home.
If Tom walks at a uniform speed of 40 m/min, find:
a) the diffference in time when he alights at the two different bus stops.