Question

7. Ravi walks at a uniform speed of 4 km per hour. How much time does he take to cover 600 metres?
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Answer 1

Answer:

4 km = 1 hour

• 1 km = 1000 m

4000 m = 1 hour

1 m = 4000 × 1 hr (inversely proportional )

600 m = 4000/600 = 40/6 = 20/3 hours.

Answer 2

Answer:

Speed = 4 km/h

To make m/s Multiply it by 5/18

= 4*5/18

= 20/18

= 1.11 m/s

To find time

T = D/S

= 600/1.11

= 540.54

= approximate 541 sec

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