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.

(At 8 a.m., Mingwei started travelling from Town A to Town B. At 8.40 a.m., Ali started travelling from Town B to Town A. Mingwei’s speed and Ali’s speed were 45 km/h and 30 km/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.)

Town A Town B

l ——- 1 ——- 1——- 1

Tom (Mingwei) John (Ali)

8am 8.40am

45km/h 30km/h

8am to 8.40am ——- 40min

45 x (40/60) = 30km

30 + 45t = 30t x 2

t = 30/(60 – 45) = 2

30 + 45t + 30t = **180**

Ans : **180km.**