Question

Amitabh covered a distance of 96 km two hours faster than he had planned to. this he achieved by travelling 1 km more every hour than he intended to cover every 1 hour 15 minutes. what was the speed at which amitabh travelled during the journey?

Answer 1

According to question

Let the speed Amitabh thought of be u and time be t
Thus

Total distance covered  x = 96 Km
Thus

at 1st hour   x = 1
     at 2nd hour   x = 2
and so on

Thus  clearly     u + 2 = 96 / 1    

So                           u = 94
and

                                       u = 96 / 1.25
                                      u = 76.8