A trains travels at a certain speed for a distance of 63km & then travels a distance 72km at an average speed of 6km/h more than its original speed. If it takes 3h to complete the total journey then find its original avg speed
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Given distance = 63 km.
Original speed of trian = x cm/hr.
time =speeddistance=x63 hrs
And it travels a distance of 72 km at a avg speed of 6 km / hr more than original speed.
distance = 72 km
speed = (x+6) km / m.
time =2+672 hrs.
If it takes 3 hrs to complete the whose journey x63+x+672 = 3 hrs