A car starts from a place with a speed of 50 km/h. After 90 minutes, another car starts in the same direction with a speed of 70 km/h, After how many hours will the second car overtake the first car?
1
\(3\dfrac{3}{4}\)
2
\(3\dfrac{2}{5}\)
3
\(3\dfrac{2}{3}\)
4
\(3\dfrac{1}{4}\)