Answer:
63 Filters.
Explanation:
To find the break even value, we need to use the formula cost = revenue.
Lets first define the different values.
Let x be the number of filters sold.
c = 1250 + 40x
r = 60x
Now we can use the formula to find the amount of filters that need to be sold.
1250 + 40x = 60x
From here we need to combine like terms like so:
1250 = 60x - 40x
1250 = 20x
Now we divide both sides by 20 to find the value of x.
![(1250)/(20) = (20x)/(20)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/uh0jml7yd7vak3fhxlkidv2bxbjl9ln8uh.png)
x = 62.5
However, in this case we cannot sell half a filter. So we need to round it up.
x = 63
63 Filters needs to be sold to break even.