
Concept explainers
a.
To find:The most expensive size of snack mix.
a.

Answer to Problem 33STP
x-small is the most expensive size of snack mix.
Explanation of Solution
Given:
The costs of different sized bags of snack mix are given in the table.
Snack Mix | |
Size | Price |
x-small | $1.96 for 12 oz |
small | $2.20 for 16 oz |
large | $4.00 for 36 oz |
x-large | $5.40 for 48 oz |
Cost of per ounce of x-small size of snack mix =$(
Cost of per ounce of small size of snack mix =$(
Cost of per ounce of large size of snack mix =$(
Cost of per ounce of x-large size of snack mix =$(
Clearly, the cost of x-small size of snack mix per ounce is maximum.
Thus, x-small is the most expensive size of snack mix.
Conclusion:
x-small is the most expensive size of snack mix.
b.
To find: The size that Pilar should buy such that it costs the least per ounce.
b.

Answer to Problem 33STP
Pilar should buy large size of snack mix.
Explanation of Solution
Given:
The costs of different sized bags of snack mix are given in the table.
Snack Mix | |
Size | Price |
x-small | $1.96 for 12 oz |
small | $2.20 for 16 oz |
large | $4.00 for 36 oz |
x-large | $5.40 for 48 oz |
Calculation:
Cost of per ounce of x-small size of snack mix =$(
Cost of per ounce of small size of snack mix =$(
Cost of per ounce of large size of snack mix =$(
Cost of per ounce of x-large size of snack mix =$(
Clearly, the cost of large size of snack mix per ounce is minimum.
Thus, large is the least expensive size of snack mix.
Conclusion:
Pilar should buy large size of snack mix.
Chapter 6 Solutions
Pre-Algebra, Student Edition
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