Formula used :Time = \(\frac{Distance}{Speed}\)
Given data:
\(Distance = 1440km\) | \(Speed = 80 m/s\)
In order to convert a speed from m/s to km/hr, we must multiply it by a factor of\(\frac{18}{5}\)
Speed in km/hour :\(80*\frac{18}{5} = 288\) km/hr
Therefore, the speed on the other side is\(2*288 = 576\) km/hr
Time taken to cover the distance :\(\frac{1440}{288} + \frac{1440}{576} = 5 + \frac{5}{2}\) = 7 hours and 30 minutes(Option D)
...
Given data:
\(Distance = 1440km\) | \(Speed = 80 m/s\)
In order to convert a speed from m/s to km/hr, we must multiply it by a factor of\(\frac{18}{5}\)
Speed in km/hour :\(80*\frac{18}{5} = 288\) km/hr
Therefore, the speed on the other side is\(2*288 = 576\) km/hr
Time taken to cover the distance :\(\frac{1440}{288} + \frac{1440}{576} = 5 + \frac{5}{2}\) = 7 hours and 30 minutes(Option D)
...
.jpg)
