Question
A man walking at the rate of 5 km/hr. crosses a bridge in 15 minutes. The length of the bridge (in metres) is :
Answer: Option A
Answer: (a)Using Rule 1,Speed of the man = 5km/hr= $5 × 1000/60$ m/min = $250/3$ m/minTime taken to cross the bridge= 15 minutesLength of the bridge= speed × time= $250/3 × 15$m = 1250m
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Answer: (a)Using Rule 1,Speed of the man = 5km/hr= $5 × 1000/60$ m/min = $250/3$ m/minTime taken to cross the bridge= 15 minutesLength of the bridge= speed × time= $250/3 × 15$m = 1250m
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