So there is a Public Transport Bus, in which 10 passangers boarded and the bus conductor collected Rs. 10 from each passanger. That means the bus conductor now has Rs. 100. Out of that Rs.100, they fill petrol for Rs. 50 and the remaining Rs. 50 is taken way by the conductor.
Now tell me, what is the age of the bus driver???
Try this out!!! Good luck