An aeroplane flies with an average speed of 756 km hr A helicopter takes 48 hours to cover twice the...........

Quantitative Aptitude ( CCS) Time & distance

An aeroplane flies with an average speed of 756\ km/hr. A helicopter takes 48 hours to cover twice the distance covered by aeroplane in 9 hours. How much distance will the helicopter cover in 18 hours? (assuming that flights are non-stop and moving with uniform speed)

5014 km

5140 km

5130 km

5103 km

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Explanation:

Distance covered by aeroplane in 9 hours = Speed × Time = 9 × 756 = 6804 km
∴ Speed of helicopter
= (2 × 6804)/48
= 283.5 kmph
∴ Distance covered by helicopter in 18 hours
= (283.5 × 18) km
= 5103 km