Pedestrian and cyclist

Pedestrian out with a speed of 4 km/hour from city center and after 1hour and 10 minutes came after him cyclist at speed of 18 km/h. At how many minutes he catches up with pedestrian?

Result

t =  20 min

Solution:


4(t+70) = 18t

14t = 280

t = 20

Calculated by our simple equation calculator.








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