Correct Answer - Option 3 : 13 minutes
Given:
If the speed of man is 50 km/hr he reaches the destination 17 minutes late and If the speed of man is 60 km/hr he reaches the destination 12 minutes late.
Formula/Concept used:
Speed = Distance/time
Time = Distance/speed
Calculation:
Let the distance covered by man is x km
∴ x/50 – x/60 = (17 – 12)/60
⇒ x = 25 km
Now, Actual time taken by man = (25/50) × 60 – 17 = 13 minutes
∴ The actual time taken by man is 13 minutes