"A man travels 600 km by train at 80 km/hr, 800 km by ship at 40 km/hr, 500 km by aeroplane at
Channel: Doubtnut
Date: 2020-04-05

"A man travels 600 km by train at 80 km/hr, 800 km by ship at 40 km/hr, 500 km by aeroplane at 400 km/hr and 100 km by car at 50 km/hr. What is the average speed for the entire distance? a. `60\ k m//h r`b. `62\ k m//h r`c. `60 5/(123)``k m//h r`d. `6 5/(123)k m//h r`"