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A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?

3.6
7.2
8.4
10

Correct Answer: 7.2

Explanation:

Speed =	❨	600	❩m/sec.
		5 x 60

= 2 m/sec.

Converting m/sec to km/hr (see important formulas section)

=	❨	2 x	18	❩	km/hr
			5

= 7.2 km/hr.

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