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

Question

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

Options:

A . 3.6

B . 7.2

C . 8.4

D . 10

Answer: Option B

Speed = \(\left(\frac{600}{5\times60}\right)m/sec.\)

= 2 m/sec.

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

= \(\left(2\times\frac{18}{5}\right)km/hr\)

= 7.2 km/hr.

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