garden city and fountain city r 180km apart. xavier departed from garden city and yara departed from fountain city at the same time. they headed towards space city. xavier travelled at a constant speed of 80km/h and yara travelled at a constant speed of 60km/h. how long did it take xavier to catch up with yara?

1 answer

depends on the bearing of garden and fountain.
Let's say that they lie in the same direction from space. In that case, since their relative speed is 20 km/hr, it will take
180/20 = 9 hours for xavier to catch up (assuming that space city is at least 540 km from fountain)