Question
City M and City N is 712 km apart. At 09 35, Sabrina, travelling at a constant speed, left City M for City N. At the same time, Mark set off from City N for City M at a constant speed which was 8 km/h faster than Sabrina. Find Mark's speed if they met at 13 35.
3 m

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City M and City N is 712 km apart. At 09 35, Sabrina, travelling at a constant speed, left City M for City N. At the same time, Mark set off from City N for City M at a constant speed which was 8 km/h faster than Sabrina. Find Mark's speed if they met at 13 35.