Multiple choice

An aeroplane is flying at average speed of 756 km/hour. Helicopter takes 48 hours to cover the twice distance covered by aeroplane in 9 hours. How much distance is travelled by helicopter in 18 hours?

  1. 5014 km

  2. 5140 km

  3. 5410 km

  4. 5420 km

  5. 5103 km
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Aeroplane distance in 9 hours = 756 × 9 = 6,804 km. Helicopter distance (twice) = 13,608 km. Helicopter speed = 13,608/48 = 283.5 km/h. Distance in 18 hours = 283.5 × 18 = 5,103 km. Option E is correct.

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