Marie is at the store comparing cereal prices. Frosty Flakes cost $3.27 for 32 ounces , and Fruity pebbles cost $2.99 for 24 ounces. Which cereal is better for Marie to buy?

Question

Please help me quick as possible. I'm doing a math quiz and I don't know what to do. Can someone please explain and answer the question.

Answer 1

Hi Airyanna,

To answer this question, you need to find the unit price or the cost of 1 ounce for each of the cereals.

For the Frosty Flakes:

$3.27 = x

32 ounces 1 ounce

Divide the numerator and denominator by 32 to find the cost of 1 ounce:

$3.27 ÷ 32 = x

32 ounces ÷ 32 1 ounce

x = $0.10 or 10 cents for each ounce of Frosty Flakes (rounded to nearest penny)

For the Fruity Pebbles:

$2.99 = x

24 ounces 1 ounce

Divide the numerator and denominator by 24 to find the cost of 1 ounce:

$2.99 ÷ 24 = x

24 ounces ÷ 24 1 ounce

x = $0.12 or 12 cents for each ounce of Fruity Pebbles (rounded to nearest penny)

The better buy is the cereal with the lowest unit price (or price for 1 ounce). This would be Frosty Flakes for this problem.