Question

a policeman follows a Thief who is 800 metre ahead of him if they run at a speed of 8 kilometre per hour and 7 km per hour respectively how long will the police man take to catch up with the thief​

Answer 1

Answer:

8 hours because he will run 7km per hour.

Hope this helps you.

Answer 2

Answer:

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Given :

Relative speed of a policeman with respect to a thief = 9-8 = 1 km/hr.

800m/1000 = 4/5

Therefore, the time taken by policeman to catch the thief = (4/5) ÷ 1 = 4/5 hr.

Distance run by the thief = 8 × 4/5 = 32/5km = 32/5 × 1000 = 6400 m.