15/7 m/sec
Explanation:The rate is:
135m in 63 seconds
This can be written as a fraction in the form:
[tex]\frac{135}{63}[/tex]This can be reduced to its lowest term by dividing the numerator by 9
[tex]\begin{gathered} \frac{135\div9}{63\div9} \\ \frac{15}{7} \end{gathered}[/tex]Therefore, the fraction form of the ratio is:
15/7 m/sec