Discussion of Question with ID = 004 under Boats-and-Streams

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The speed of an aircraft in still air is 14 km/h and rate of wind is 8 km/h. If it travels along the direction of the wind for 7 hours, what is the distance travelled by the aircraft during the journey?


154 km.


155 km.


153 km.


157 km.

Ans: a

The effective speed of the aircraft in the air is 14 + 8 = 22 km/h. The distance is speed × time = 22 × 7 = 154 km.

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