Given
80 - pound grass seed mixture is 30% bluegrass seed.
Find
How many pounds of seed containing no bluegrass seed (0%) should be added to the seed ,mixture for a resulting blend that is 20% bluegrass seed
Explanation
Let x be the amount of no bluegrass seed
so , according to the question ,
[tex]\begin{gathered} 0.30(80)+0(x)=0.20(80+x) \\ 24+0=16+0.20x \\ 8=0.20x \\ x=\frac{8}{0.20} \\ x=40 \end{gathered}[/tex]
