Please solve it............
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Step-by-stelet the original rate of walking be x km/hr and the distance covered be y km.
therefore time taken to cover y km = distance/speed = y / x hr
therefore
if he walks 1/2 km/hr faster , he takes 1 hour less, therefore eq is:
if he walks 1 km / hr slower, he takes 3 more hours:p explanation:
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