Question
A carriage travelling in fog passed along a man who was
walking @ 6 km/hr in the same direction. He could see the carriage for 8 minutes and it was visible to him upto a distance of 400 metres. What was the speed of the carriage?Solution
According to the question Man walks in 1 hour = 6000 m In 8 minutes = 6000/60 ×8 = 800 m Carriage: 8 minutes = 1200 m (because, 400 + 800) 60 minutes = 1200/8 × 60 = 9000 ≈ 9 km/hr IXAMBEE Approach: d1/d2= S1/S2 1200/800 = S1/6 S1 = 9 Km/hr
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