Answer:
The cars travel at equal speeds at approximately
Explanation:
Speed is the ratio of distance to time.
Let distance be y
Let time be x
and speed be s
We have;
[tex]s=\frac{y}{x}[/tex]
The car with the greatest ratio of distance to time is the one with the greatest speed.
Let us test one after the other
For x = 15, y = 12.5
[tex]\begin{gathered} s=\frac{12.5}{15} \\ \\ =0.83 \end{gathered}[/tex]
For x = 30, y = 25
[tex]\begin{gathered} s=\frac{25}{30} \\ \\ =0.83 \end{gathered}[/tex]
For x = 45, y = 37.5
[tex]\begin{gathered} s=\frac{37.5}{45} \\ \\ =0.83 \end{gathered}[/tex]
Notice that this ratios are equal. Hence, we conclude that the cars travel at equal speeds
