1.

A motorcyclist drives from place ato b with a uniform speed of 30km/h^-1 and return from place b to a with a uniform speed of 20km/hr. find average speed

Answer»

We KNOW that AVERAGE speed,
Total distance ÷ total time taken
Given,
distance =30km+20km =50km
time taken = 1hour+1hour= 2hour
so when put the VALUES we GET ,
50km÷2hour =25km/hr



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