Pedestrian 27061

Behind a pedestrian walking at an average speed of 5 km/h, a cyclist drove from the same place 3 hours later at an average speed of 20 km/h. How long will it take for a cyclist to catch up with a pedestrian?

Correct answer:

t =  1 h

Step-by-step explanation:

v1=5 km/h T=3 h v2=20 km/h  s1=s2  v1 (t+T)=v2 t 5 (t+3)=20 t  15t=15  t=1515=1  t=1=1 h



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