HELP!!!!!!!!!!!!!!!!!!!!!

Answer:
56 riders
Step-by-step explanation:
With the proportion given, cross multiply, then divide:
I hope this helps!
[tex] \:\:\:\:\:\frac{70}{100} = \frac{x}{80} \\ \\ = > \frac{7 \cancel0}{10 \cancel0} = \frac{x}{80} \\ \\ = > x = \frac{7 \times 80}{10} \\ \\ = > x = \frac{7 \times 8 \cancel0}{1 \cancel0} \\ \\ = > x = \green{\boxed{56 \: rides}}[/tex]