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Multiple choice

. A boat takes 8 hrs upstream and 6 hrs downstream. Current speed = 4 kmph. Find boat speed in still water

  1. 28 kmph

  2. 8 kmph

  3. 32 kmph

  4. 30 kmph

  5. 14 kmph

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let boat speed be B. Upstream speed = B - 4, downstream speed = B + 4. Distance = (B - 4) * 8 = (B + 4) * 6. 8B - 32 = 6B + 24. 2B = 56, so B = 28.

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