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9-35.

Examine the snack-mix recipes described below.

1. Calculate the portion of each mix below that is chocolate chips, expressing your answer as a percent. Which recipe has the greatest concentration of chocolate chips?

For Recipe A, find the total number of cups in the recipe.

Next, write a fraction expressing the portion that is chocolate chips.

Convert the fraction into a percent.

$3 \text{ cups} + 2 \text{ cups} + 2 \text{ cups} + 2 \text{ cups}\\ + 1 \text{ cup} = 10 \text{ cups}$

$\frac{3}{10}$

$\frac{3}{10}=\frac{30}{100}=30\%$

$30\%$ of Recipe A is chocolate chips.
Repeat the above steps for Recipe B and Recipe C, then determine which has the highest percent of chocolate chips.

2. Calculate the portion of each mix that is peanuts, again expressing your answer as a percent. Which recipe has the greatest concentration of peanuts?

Recipe A:
$3$ cups Choc. Chips
$2$ cups Peanuts
$2$ cups Raisins
$2$ cups Cashews
$1$ cup of Coconut

Recipe B:
$5$ cups Choc. Chips
$7$ cups Peanuts
$4$ cups Raisins
$2$ cups Cashews
$1$ cups Coconuts
$1$ cups Almonds

Recipe C:
$6$ cups Choc. Chips
$7$ cups Peanuts
$5$ cups Raisins
$2$ cups Cashews
$2$ cups Coconuts
$3$ cups Almonds

• This problem is very similar to part (a), and you have already found the total number of cups in each recipe.
For each recipe, express the portion first as a fraction and then convert the fraction to a percent.