A person crosses a road 350 metres wide in 70 seconds. His speed (in km/h) is:

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SSC Selection Post 2024 (Matriculation Level) Official Paper (Held On: 26 Jun, 2024 Shift 1)
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  1. 18
  2. 17
  3. 19
  4. 15

Answer (Detailed Solution Below)

Option 1 : 18
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SSC Selection Post Phase 13 Matriculation Level (Easy to Moderate) Full Test - 01
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Detailed Solution

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Given:

Width of the road = 350 metres

Time taken to cross the road = 70 seconds

Formula Used:

Speed (in km/h) = (Distance (in meters) / Time (in seconds)) × 18/5

Calculation:

Distance = 350 meters

Time = 70 seconds

Speed (in km/h) = (350 / 70) × 18/5

⇒ Speed (in km/h) = 5 × 18/5

⇒ Speed (in km/h) = 18 km/h

The correct answer is option 1.

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