SOLUTION: if a boy rides a bicycle 10km at an average speed of 12km/hr and again travels 12km at an average speed 0f 10km/hr,find his average speed of the entire trip?
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: if a boy rides a bicycle 10km at an average speed of 12km/hr and again travels 12km at an average speed 0f 10km/hr,find his average speed of the entire trip?
Log On
Question 709702: if a boy rides a bicycle 10km at an average speed of 12km/hr and again travels 12km at an average speed 0f 10km/hr,find his average speed of the entire trip? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! if a boy rides a bicycle 10km at an average speed of 12km/hr and again travels 12km at an average speed 0f 10km/hr,find his average speed of the entire trip?
-----------
t = d/r
t = 12/10 + 10/12 = 244/120 hours
t = 61/30 hrs
-------
r = d/t = 22/(61/30)
r = 660/61 km/hr
