Multiple choice

Q.152.A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream. A. 2 hours B. 3 hours C. 4 hours D. 5 hours E. None

  1. A

  2. B

  3. C

  4. D

  5. E
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Downstream speed = 13 + 4 = 17 km/hr. Time = Distance / Speed = 68 / 17 = 4 hours.

AI explanation

The downstream speed is the sum of the boat's speed in still water and the stream speed, giving 13 plus 4 equals 17 km/hr. The time taken is the distance divided by this speed, so 68 divided by 17 results in 4 hours.

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