Answer:
[tex]\boxed {\tt s=133 \frac{1}{3} \ or \ 133.333333 \ km/hr}[/tex]
Explanation:
We want to find speed, so we can use the following formula.
[tex]s=\frac{d}{t}[/tex]
where [tex]d[/tex] is the distance traveled and [tex]t[/tex] is the time.
We traveled 400 kilometers in 3 hours. Therefore,
[tex]d= 400 \ km \\t= 3 \ hrs[/tex]
Substitute the values into the formula.
[tex]s=\frac{400 \ km }{3 \ hrs}[/tex]
Divide
[tex]s= 133.33333 \ km/hr[/tex]
[tex]s= 133 \frac{1}{3} \ km/hr[/tex]
The speed is 133 1/3 or 133.33333 kilometers per hour.
