Answer:
Leo run 21 laps.
Step-by-step explanation:
Consider the provided information.
Mark and Leo are on the track team. The ratio of the laps that Mark ran to the number that leo ran was 5 to 7.
It is given that the ratio is 5 to 7.
This can be written as:
[tex]\frac{Mark}{Leo} =\frac{5}{7}[/tex]
Let Mark ran 15 laps.
[tex]\frac{15}{Leo} =\frac{5}{7}[/tex]
[tex]Leo=\frac{15\times 7}{5} [/tex]
[tex]Leo=3\times 7 [/tex]
[tex]Leo=21[/tex]
Hence, Leo run 21 laps.