R

Rohan Raj • 6.53K Points
Tutor III Math

  • (A) 5 min 12 sec
  • (B) 4 min 40 sec
  • (C) 5 min
  • (D) 4 min 48 sec
Correct Answer - Option(D)

Explanation by: Rohan Raj
Rohit's speed = 10 Km/hr = (10 x 5/18) m/sec = 50/18 m/sec

Time taken to cover 800 m = (800 / (50/18) ) sec
= (800 x 18/50) sec = 288 sec = 4 min 48 sec

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