A cyclist

A cyclist rides for 30 minutes on a style road to the top of a mountain. Down there, the road goes downhill. Its uphill speed is 20km/h and 60km/h downhill. The distance from the summit of the mountain to its destination is 30 km. Calculate the average speed over the entire ride.

Correct answer:

v =  40 km/h

Step-by-step explanation:

v1=20 km/h v2=60 km/h s2=30 km t1=30 min h=30:60  h=0.5 h  s1=v1 t1=20 0.5=10 km s2 = v2 t2  t2=s2/v2=30/60=21=0.5 h  t=t1+t2=0.5+0.5=1 h s=s1+s2=10+30=40 km  v=s/t=40/1=40 km/h



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Looking for help with calculating arithmetic mean?
Looking for a statistical calculator?
Do you want to convert length units?
Do you want to convert velocity (speed) units?
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:


 
We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: