A car travels at a speed of 60 km/hr and covers a particular distance in one hour. How long will it take for another car to cover the same distance at 40 km/hr?
[A]1\ hours
[B]\frac{3}{2}\ hours
[C]2\ hours
[D]\frac{5}{2}\ hours

\mathbf{\frac{3}{2}\ hours}
Distance = Speed \times Time = 60 km
Time taken at 40 km/hr = \frac{60}{40} = \frac{3}{2}\ hours
Hence option [B] is correct answer.