Answer:
1.875 or [tex]1\frac{7}{8}[/tex] cups of pretzel
Step-by-step explanation:
The number of cups needed is equivalent to the probability of pretzel in the mix times the number of cups in the mix.
-The probability of pretzel is :
[tex]P(pretzel)=\frac{0.2}{0.25+0.25+1.5}\\\\=0.125[/tex]
We multiply this probability by the number of cups of the mix:
[tex]=P(pretzel)\times (mix \ cups)\\\\=0.125\times 15\\\\=1.875 \ or \ 1\frac{7}{8}[/tex]
Hence, 1.875 or 1/7/8 cups of pretzel is needed.
