Calculating time, given speed and distance
Question
Joanna drives for \(400\,km\) at an average speed of \(80\,km/h\). How long was her journey?
\(Time = \frac{{Distance}}{{Speed}}\)
\(Time = \frac{{400}}{{80}}\)
\(Time = 5\,hrs\)
Joanna's journey was \(5\,hrs\) long.
Question
Scott cycles at \(4\,mph\) and covers a distance of \(13\;miles\). How long does his journey take?
\(Time = \frac{{Distance}}{{Speed}}\)
\(Time = \frac{{13}}{4}\)
\(Time = 3.25\,hrs\)
But we don't write \(3.25\;hours\). The answer should be in hours and minutes.
So the answer is \(3\,hrs\; 15\,mins\).
Hopefully, that wasn't too difficult. But if you made any mistakes try those examples again.