A man riding on a bicycle at a speed of 21 km/h crosses a bridge in 6 minutes. Find the length of the bridge?

This question was previously asked in
RPF Constable 2024 Official Paper (Held On 02 Mar, 2025 Shift 2)
View all RPF Constable Papers >
  1. 2.1 km
  2. 6.1 km
  3. 5.1 km
  4. 4.5 km

Answer (Detailed Solution Below)

Option 1 : 2.1 km
Free
RPF Constable Full Test 1
120 Qs. 120 Marks 90 Mins

Detailed Solution

Download Solution PDF

Given:

Speed of the man (S) = 21 km/h

Time taken to cross the bridge (T) = 6 minutes

Formula used:

Distance (D) = Speed (S) × Time (T)

Calculation:

Convert time from minutes to hours:

6 minutes = 6/60 hours = 0.1 hours

Distance (D) = 21 km/h × 0.1 hours

⇒ D = 2.1 km

∴ The correct answer is option 1.

Latest RPF Constable Updates

Last updated on Jul 16, 2025

-> More than 60.65 lakh valid applications have been received for RPF Recruitment 2024 across both Sub-Inspector and Constable posts.

-> Out of these, around 15.35 lakh applications are for CEN RPF 01/2024 (SI) and nearly 45.30 lakh for CEN RPF 02/2024 (Constable).

 

-> The Examination was held from 2nd March to 18th March 2025. Check the RPF Exam Analysis Live Updates Here.

More Speed Time and Distance Questions

Hot Links: all teen patti teen patti real money app teen patti all app teen patti flush