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.
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