A helicopter reached destination from source via four stops. Helicopter reached different stops at different speeds 100, 200, 300 and 400 kmph respectively. What is the average speed of the helicopter in its flight from source to destination?
1) 220 kmph
2) 188 kmph
3) 192 kmph
4) 212 kmph

Submitted by: Murtaza
3) 192 kmph
Submitted by: Murtaza

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