Answer:
3500.
Step-by-step explanation:
We have been given that Cesar Chavez lead a March with 6,300 people. The ratio of marchers who were not farm-workers to farm-workers is 4:5. We are asked to find the number of marchers, who were farm-workers.
First of all, we will find the ratio of farm-workers to total marchers as:
[tex]\frac{\text{Farm-workers}}{\text{Total marchers}}=\frac{\text{Farm-workers}}{\text{Farm-workers+non-farm-workers}}=\frac{5}{4+5}=\frac{5}{9}[/tex]
To find the number of marchers, who were farm-workers, we need to find [tex]\frac{5}{9}[/tex] of whole marchers.
[tex]\text{Number of marchers that were farm-workers}=6300\times \frac{5}{9}[/tex]
[tex]\text{Number of marchers that were farm-workers}=700\times \frac{5}{1}[/tex]
[tex]\text{Number of marchers that were farm-workers}=3500[/tex]
Therefore, 3500 marchers were farmers.