"A  boy rides his bicycle 10 km at an average speed c: 12 km/hr and again travels
Channel: Doubtnut
Date: 12/04/2020

"A
  boy rides his bicycle 10 km at an average speed c: 12 km/hr and again travels
  12 km at an average speed of 10 km/hr. His average speed for the entire trip
  is approximately 
`10. 4\ k m//h r`
b. `10. 8\ k m//h r`

c. `1\ k m//h r`
d. `12. 2\ k m//h r`"