Bhanu can row upstream at 8 kmph and downstream at 15 kmph. Find Bhanu

1.	Bhanu can row upstream at 8 kmph and downstream at 15 kmph. Find Bhanu's rowing speed in still water and the speed of current respectively.1. 11.5 kmph, 3.5 kmph2. 3.5 kmph, 11.5 kmph3. 12 kmph, 3 kmph4. 3 kmph, 12 kmph
Answer» Correct Answer - Option 1 : 11.5 kmph, 3.5 kmph Given: Downstream speed = d = 15 kmph Upstream speed = u = 8 kmph Formula used: Speed of boat in still water = (d + u)/2 Speed of stream = (d – u)/2 Calculations: Let the speed of boat in still water be B and the speed of stream be S Speed of boat in still water ⇒ B = (15 + 8)/2 ⇒ B = 23/2 ⇒ B = 11.5 kmph Speed of stream ⇒ S = (15 – 8)/2 ⇒ S = 7/2 ⇒ S = 3.5 kmph ∴ The speed of boat in still water is 11.5 kmph and the speed of stream is 3.5 kmph

Bhanu can row upstream at 8 kmph and downstream at 15 kmph. Find Bhanu's rowing speed in still water and the speed of current respectively.1. 11.5 kmph, 3.5 kmph2. 3.5 kmph, 11.5 kmph3. 12 kmph, 3 kmph4. 3 kmph, 12 kmph

Answer» Correct Answer - Option 1 : 11.5 kmph, 3.5 kmph

Given:

Downstream speed = d = 15 kmph

Upstream speed = u = 8 kmph

Formula used:

Speed of boat in still water = (d + u)/2

Speed of stream = (d – u)/2

Calculations:

Let the speed of boat in still water be B and the speed of stream be S

Speed of boat in still water

⇒ B = (15 + 8)/2

⇒ B = 23/2

⇒ B = 11.5 kmph

Speed of stream

⇒ S = (15 – 8)/2

⇒ S = 7/2

⇒ S = 3.5 kmph

∴ The speed of boat in still water is 11.5 kmph and the speed of stream is 3.5 kmph

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