Question

A runner covers covers a distance of
270 metres race in 24 seconds. What is
his speed in km/hr​

Answer 1

speed =distance/time

270/24=

11.25m/s

Answer 2

$\huge\color{orange}\boxed{\colorbox{black}{\tt{☣ANSWER☣}}}$

★Distance : 270 m

★Time : 24 s

★Speed : Distance/Time = 270m/24s = 45/4 m/s

★Conversion into km/h :

$\frac{45m}{4s} \times \frac{1000m}{3600s}$

$\frac{45}{4} \times \frac{5}{18}$

$\frac{225}{72}$

$\frac{25}{8}$

$= 3.125 \: km \: {h}^{ - 1}$