Mr. Stephan

Mr. Stephan cycled at an average speed of 15 km/h for 10 km. He then cycled another 12 km at an average speed of 18 km/h. Find the total time taken for his journey.

Result

t = 1:20 hh:mm Wrong answer

Step-by-step explanation:

v1=15 km/h s1=10 km  s2=12 km v2=18 km/h  s=vt t1=s1/v1=10/15=320.6667 h t2=s2/v2=12/18=320.6667 h  t=t1+t2=0.6667+0.6667=1.33333=1:20 hh:mm



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