A CAR RUNS AT THE SPEED OF 50 KMS PER HOUR WHEN NOT SERVICED AND R...

21. A car runs at the speed of 50 kms per hour when not serviced and runs at 60 kms/hr. when serviced. After servicing the car covers a certain distance in 6 hours. How much time will the car take to cover the same distance when not serviced ? (A) 8·2 hours (B) 6·5 hours (C) 8 hours (D) 7·2 hours (E) None of these Ans : (D) Directions—(Q. 22–24) What approximate value should come in place of the question mark (?) in the following questions ? (You are not expected to calculate the exact value.)