Unit Rate with Tables, Graphs, and Equations

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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 item or the efficiency of a product.

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How do you calculate the unit price of an item?

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To calculate the unit price, divide the total price of the item by the total weight or quantity. For example, if a 10-pound watermelon costs $3.90, the unit price is $3.90 ÷ 10 = $0.39 per pound.

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What is the unit price of a 13-ounce box of cereal that costs $3.99?

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To find the unit price, divide the total cost by the number of ounces: $3.99 ÷ 13 = approximately $0.31 per ounce.

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How do you convert a price per weight to a price per unit?

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To convert a price per weight to a price per unit, divide the total price by the total weight and then multiply by the desired unit weight.

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What is the formula for calculating miles per gallon (MPG)?

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The formula for calculating miles per gallon is: MPG = Total miles driven ÷ Total gallons of fuel used.

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If a motorcycle gets 55 miles per gallon, how far can it travel on 3 gallons of gas?

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If a motorcycle gets 55 miles per gallon, it can travel 55 miles/gallon × 3 gallons = 165 miles.

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What is the significance of comparing unit rates when shopping?

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Comparing unit rates helps consumers determine which product offers the best value for money, allowing them to make informed purchasing decisions.

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How do you find the better buy between two products with different sizes and prices?

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Calculate the unit price for each product by dividing the price by the size (e.g., ounces or pounds) and compare the unit prices to see which is lower.

Front

What is the unit rate of a 10-ounce box of cereal that costs $2.79?

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To find the unit rate, divide the total cost by the number of ounces: $2.79 ÷ 10 = $0.28 per ounce.

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Why is it important to understand unit rates in real-life situations?

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Understanding unit rates is important because it allows individuals to make cost-effective decisions in purchasing, budgeting, and evaluating efficiency.