Answer:
The proportion is [tex]\frac{y}{x} =\frac{1}{25}[/tex]
Step-by-step explanation:
We have to:
In June 20 of 500 wagons failed
On July 25 of 625 wagons failed
If we call x the number of wagons and and the number of wagons that had failures then we have to for June:
[tex]\frac{y}{x} = \frac{20}{500}\\\\\frac{y}{x} = \frac{1}{25}[/tex]
For July we have
[tex]\frac{y}{x} = \frac{25}{625}\\\\\frac{y}{x} = \frac{1}{25}[/tex]
The proportions are the same for both months
[tex]\frac{20}{500} = \frac{25}{625}[/tex]
The proportion is [tex]\frac{y}{x} =\frac{1}{25}[/tex]
This means that of every 25 wagons, one has faults
