Answer :

Let the speed of Joseph = x km/h

Let the speed of Hamid be = y km/h


When approaching each other, combined speed =


Time taken to meet =



When moving away from each other, combined speed =


Time taken for Hamid to catch up =



Equating I and II,






Substituting x=50in eq. I





Hamid's speed 50 km/hr.


Joseph's speed 40 km/hr.


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