Answer:
475 runners competed in the Labor Day race.
Step-by-step explanation:
Given:
Last year, 60% of runners who competed in the Labor Day race finished in 1 hour or less. There were 285 runners who finished the Labor Day race in 1 hour or less.
Now, to find the runners competed in the Labor Day race.
Let the runners competed in the Labor Day race be [tex]x.[/tex]
Rate of runners who competed in the Labor Day race finished in 1 hour or less = 60%.
Number of runners who competed in the Labor Day race finished in 1 hour or less = 285.
Now, to get the runners competed in the Labor Day race we put an equation:
[tex]60\%\ of\ x=285[/tex]
[tex]\frac{60}{100} \times x=285[/tex]
[tex]0.60x=285[/tex]
Dividing both sides by 0.60 we get:
[tex]x=475.[/tex]
Therefore, 475 runners competed in the Labor Day race.