"A motorist travels to a place 150 km away at an average speed of 50 km/hr and re
Channel: Doubtnut
Date: 2020-04-12

"A motorist
 travels to a place 150 km away at an average speed of 50 km/hr and returns at
 30 km/hr. His average speed for the whole journey in km/hr is
(a) 35 (b) 37 (c) 37.5 (d) 40"