Walking at the rate of 4 kmph a man cover certain distance in 2 hr 45 min running at a speed of 16.5 kmph the man will cover the same distance in.
Answer & explanation
Correct answer: option 3
Speed = \(\frac{ Distance}{ Time}\)
Distance = Speed x Time
Distance = 4 x 2 \(\frac{45 }{ 60}\)
Distance = 4 x 2 \(\frac{3 }{ 4}\) = 4 x \(\frac{11 }{ 4}\)
Distance = 11 km
Time taken to cover the distance with speed of 16.5 km/hr
Time = \(\frac{ Distance}{Speed}\)
Time = \(\frac{ 11}{16.5}\)
Time = \(\frac{ 110}{165}\)
Time = \(\frac{ 2}{3}\) hour
Time = \(\frac{ 2}{3}\) x 60
Time = 40 minutes