"A person travels from P to Q at a speed of 40 kmph and returns by increasing his speed by 50%
Channel: Doubtnut
Date: 2020-04-05

"A person travels from P to Q at a speed of 40 kmph and returns by increasing his speed by 50% . what is his average speed for both the trips?`36\ k m p h`b. `45\ k m p h`c. `48\ k m p h`d. `50\ k m p h`"