Question

Two buses start from the same bus stand at 8



a.M. One travels at 40 km./h. And the other at 50 km./h. The second bus reaches the next stop at 10



a.M. How much later will the first bus arrive ?

Answer 1

The time taken by the second bus to reach to the stop =(10-8)

                                                                                           = 2 hours

If the speed is 50 km/hr then the time taken is 2 hrs

If the speed is 1 km/hr then the time taken is (2×50) = 100 hrs

If the speed is 40 km/hr then the time taken is (100/40)= 2 hrs 20 min

∴ The first bus will reach to the stop after = (2°20'-2°00')

                                                                      = 20 minutes

(Ans): The first bus will reach to the stop after 20 minutes.