What is Ram's average speed if he goes from Point X to Point Y at 8 km/hr and returns from Point Y to Point X at 12 km/hr?

Given:  

Ram's Speed from going point X to Y (S1) = 8 km/h 

Ram's Speed from going point Y to X (S2) = 12 km/h 

Formula Used: ​

Average Speed = $$\frac{2 \times S1 \times S2}{S1 + S2}$$​​

Solution:  ​

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