Problem

Find the best buy for the item. Give the unit price to the nearest thousandth for that siz...

Find the best buy for the item. Give the unit price to the nearest thousandth for that size. See Example. (Source: Various grocery stores.)

EXAMPLE Finding Price per Unit
A Jewel-Osco supermarket charges the following prices for a jar of extra crunchy peanut butter.
Peanut Butter
Size
Price
18 oz
$3.49
28 oz
$4.99
40 oz
$6.79
Which size is the best buy? That is, which size has the lowest unit price?
To find the best buy, write ratios comparing the price for each size jar to the number of units (ounces) per jar.
Peanut Butter
Because the 40-oz size produces the lowest unit price, it is the best buy. Buying the largest size does not always provide the best buy, although it often does, as in this case.

Applesauce

Size	Price
23 oz	$1.99
48 oz	$3.49

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Solutions For Problems in Chapter 2.6

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