Question

At a grocery store, blueberries come packaged in 8-ounce containers for $2.80. At a farmer's market, blueberries cost $4.20 for 14 ounces. There are 16 ounces in one pound. Which statement accurately compares the cost of blueberries?

Answer 1

Answer:

A pound of blueberries from the farmer's market is cheaper than a pound of blueberries from the grocery store.

Explanation:

The grocery store charges $2.80 for an 8-oz package of blueberries.  This is a unit cost of

2.8/8 = $0.35 per ounce.

This means a pound, 16 ounces, would cost 16(0.35) = $5.60.

The farmer's market charges $4.20 for 14 ounces.  This is a unit cost of

4.20/14 = $0.30 per ounce.

This means a pound, 16 ounces, would cost 16(0.3) = $4.80.  This is

5.60-4.80 = 0.80 cheaper than at the grocery store.

Answer 2

1 pound = 16 ounce.

8 ounce =  0.5 pound

14 ounce = 0.875 pound.

Cost of blueberries per pound at Grocery store = $2.80\times0.5=5.6$ dollars.

Cost of blueberries per pound at farmer's market = $\frac{4.20}{0.875} =4.8$ dollars.

$5.6-$4.8=$0.8

Hence, at farmers market, blueberries cost $0.80 less for one pound of blueberries.