Question

a car travei's 54km/h for 20sec, 36km/h for next 30sec and finally 18km/h for 10sec. Find average speed show with solution

Answer 1

Your answer is here :
54+36+18=total speed
20+30+10=total time
Average speed=total speed/total time
=108/60
=54/30
=27/15
=9/5
Is your answer
Hope you like it

Answer 2

Answer:

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