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Units of Speed

If a man walk...

Question

If a man walks 25 km per 1 hour and 50 km per 2 hours how many kilometres does he walk in 3 hours

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Solution

Dear student,

If a man walks 25 km per 1 hour, then the speed of the man is 25 km/hr.
In two hours he will walk = $25 \times 2 = 50 k m$ (as given in the question)
So, the distance he walk in 3 hours = $25 \times 3 = 75 k m$

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