"A car covers the first 39 kms of its journey I 45 minutes and covers the remaining 25 km in 3 min
Channel: Doubtnut
Date: 2020-04-05

"A car covers the first 39 kms of its journey I 45 minutes and covers the remaining 25 km in 3 minutes. What is the average speed of the car?`40\ k m//h r`b. `48\ k m//h r`c. `49\ k m//h r`d. `64\ k m//h r`e. none of these"