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A warship left port X for port Y at an average speed of 32 km/h at 10 a.m. .
An ocean liner left port Y for port X at an average speed of 18 km/h at the same time.
An hour and a half later, both the warship and the ocean liner still had not passed each other and were 14.25 km apart.
If both the warship and the ocean liner travelled on the same route , find the distance between port X and port Y.
Notes to students: