?
A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?
Answer & Solution
Correct Answer:
Option
B
$$\eqalign{
& {\text{Speed}} = {\frac{{600}}{{5 \times 60}}} {\text{ m/sec}} = 2{\text{m/sec}} \cr
& {\text{Converting}}\,{\text{m/sec}}\,{\text{to}}\,{\text{km/hr}} \cr
& = {2 \times \frac{{18}}{5}} {\text{ km/hr}} \cr
& = 7.2\,{\text{ km/hr}} \cr} $$
Join the Discussion
Login to post a comment or share your explanation.
Login