ANSWER
Alex needs to mix one pound of dried fruit with
[tex]1 \frac{1}{9} [/tex]
pounds of walnuts.
EXPLANATION
It was given that, Alex mixes
[tex] \frac{2}{3}[/tex]
pounds of walnuts with
[tex] \frac{3}{5} [/tex]
pounds of dried fruit.
We can write the ratio,
[tex] \frac{2}{3} : \frac{3}{5} [/tex]
Let
[tex]x[/tex]
represent how many pounds of walnuts Alex needs to mix with one pound of dried fruit.
Then we can again write the ratio,
[tex]x: 1[/tex]
We can therefore write the proportion,
[tex] \frac{2}{3} : \frac{3}{5} = x: 1[/tex]
This can be rewritten as,
[tex] \frac{ \frac{2}{3} }{ \frac{3}{5} } = \frac{x}{1} [/tex]
We solve for x to obtain,
[tex] \frac{2}{3} \times \frac{5}{3} = x[/tex]
This implies that,
[tex]x = \frac{10}{9} [/tex]
[tex]x = 1 \frac{1}{9} [/tex]
Hence Alex needs to mix
[tex] 1\frac{1}{9} [/tex]
pounds of walnuts with one pound of dried fruit.
