Answer:
portion = 85.50
Step-by-step explanation:
[tex]Rate = (\frac{Portion}{Base})*100%[/tex]
Rate = 19%, Base = 450
[tex]19 = \frac{portion}{450} \times 100\\\\19 \times 450 = portion \times 100\\\\\frac{8550}{100} = portion \\\\portion = 85.50[/tex]
