- 50 kmph
- 80 kmph
- 75 kmph
- 125 kmph
- 130 kmph

Option 4 : 125 kmph

**GIVEN:**

Speed of boat in still water : Speed of current = 5x : 1x

Distance to be travelled = 300 km.

**FORMULA USED:**

Speed = Distance covered/Time taken

**CALCULATION:**

300/6x = T

300/4x = T + 1

Solving,

x = 25

Speed of boat in still water = 5x = 125 kmph

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