need help in the following question :
At 8am, Tom started travelling from Town A to Town B. At 8:40am, John started travelling from Town B to Town A. Tom’s speed and John’s speed were 45 km/h and 30km/h respectively. They did not change their speeds throughout the journey. When they met each other, their distance from Town A was twice their distance from Town B. Find the distance between Town A and Town B.
Thanks in advance.