The speed of a swimmer in downstream is 23km/h. If the speed of the swimmer in upstream is 14 km/h, then what is the speed of the stream?

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SSC GD Constable (2022) Official Paper (Held On : 30 Jan 2023 Shift 1)
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  1. 4.5 km/h
  2. 5.5 km/h
  3. 4.0 km/h
  4. 5.0 km/h

Answer (Detailed Solution Below)

Option 1 : 4.5 km/h
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Detailed Solution

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Given:

Swimmer's speed downstream = 23 km/h,

Speed upstream = 14 km/h.

Concept:

Speed of the stream = (Downstream speed - Upstream speed) / 2.

Solution:

Speed of the stream = (23 km/h - 14 km/h) / 2 = 4.5 km/h.

Therefore, the speed of the stream is 4.5 km/h.

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