Solution
Given,
Distance = 700 m = $$\frac{700}{1000}$$ km
Time = 6 minutes = $$\frac{6}{60}$$ hr
Speed = $$\frac{\text{Distance}}{\text{Time}}$$ = $$\frac{\frac{700}{1000}}{\frac{6}{60}}$$ = $$\frac{700}{1000}\times\frac{60}{6}$$ = 7 km/h
Hence, the correct answer is Option B
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