Best Buy: Unit Rates

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What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as a quantity of one. It is often used to determine the cost per unit of a product.

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How do you calculate the unit rate from a total cost and quantity?

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To calculate the unit rate, divide the total cost by the quantity. For example, if 8 apples cost $5.20, the unit rate is $5.20 ÷ 8 = $0.65 per apple.

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What is the importance of comparing unit rates when shopping?

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Comparing unit rates helps consumers determine the best value for their money by identifying which product offers the lowest cost per unit.

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How can you determine which of two products is a better deal?

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To determine which product is a better deal, calculate the unit rate for each product and compare them. The product with the lower unit rate is the better deal.

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What is the unit rate for 15 kg of tomatoes costing $32.25?

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The unit rate is $32.25 ÷ 15 kg = $2.15 per kg.

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If 2 liters of milk cost $3.80, what is the unit rate?

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The unit rate is $3.80 ÷ 2 liters = $1.90 per liter.

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What is the unit rate for 1.5 liters of milk costing $2.70?

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The unit rate is $2.70 ÷ 1.5 liters = $1.80 per liter.

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How do you compare two different sizes of the same product to find the better buy?

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Calculate the unit rate for each size and compare them. The size with the lower unit rate is the better buy.

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What is the unit rate for 27 ounces of nacho chips costing $3.51?

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The unit rate is $3.51 ÷ 27 ounces = $0.13 per ounce.

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What is the unit rate for 10 ounces of nacho chips costing $1.30?

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The unit rate is $1.30 ÷ 10 ounces = $0.13 per ounce.