) When there is no wind, an aeroplane travelling from Hyderabad to Delhi takes 2 hours. One
day, when the wind is continuously blowing in the direction opposite to the path of the
aeroplane, the flight takes 3 hours. If the distance from Hyderabad to Delhi is 1260 km, find
the wind speed?
Answers
Given : When there is no wind, an aeroplane travelling from Hyderabad to Delhi takes 2 hours.
when the wind is continuously blowing in the direction opposite to the path of the aeroplane, the flight takes 3 hours.
the distance from Hyderabad to Delhi is 1260 km,
To Find : the wind speed?
Solution:
distance from Hyderabad to Delhi is 1260 km,
Time taken when no air = 2 hrs
Speed = Distance / Time
Speed of aeroplane when no air = 1260 / 2 = 630 km/hr
Time taken when air in opposite direction = 3 hrs
Speed of aeroplane when air in opposite direction = 1260 / 3 = 420 km/hr
Speed of aeroplane when air in opposite direction = Speed of aeroplane when no air - Speed of air
=> 420 = 630 - Speed of air
=> Speed of air = 210 km/hr
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