Multiple choice

Speed of the boat is 16(2/3)% more than the speed of the car which moves 120 km at 4 hours. The boat covers a distance of 164 km downstream in 4 hrs. Find the distance covered by the boat upstream in 5 hrs.

  1. 110 km

  2. 160 km

  3. 130 km

  4. 150 km

  5. None of these
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Car speed = 120/4 = 30 km/h. Boat is 16(2/3)% more = 1/6 more, so boat speed = 35 km/h. Downstream: boat + stream = 164/4 = 41 km/h, so stream = 6 km/h. Upstream: boat - stream = 35 - 6 = 29 km/h. Distance in 5 hours = 29 × 5 = 145 km. None of the options (110, 160, 130, 150) match 145 km, so "None of these" is correct.

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