RATIO AND PROPORTION

What is a ratio?

• A way of adding two or more quantities.

• A way of comparing two or more quantities.

• A way of multiplying two or more quantities.

• A way of subtracting two or more quantities.

Which of the following is NOT a way to write a ratio?

• Word form (e.g., a is to b)

• Colon form (e.g., a:b)

• Fraction form (e.g., a/b)

• Equation form (e.g., a = b)

What are equivalent ratios?

• Ratios that are simplified to their lowest terms.

• Ratios that compare different types of numbers.

• Ratios that make the same comparison of numbers.

• Ratios that are always written in fraction form.

What is a proportion?

• A method for simplifying fractions.

• A statement of equality between two ratios or fractions.

• A way to find the greatest common factor of two numbers.

• A comparison of more than two quantities.

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What must be true about the product of the means and the product of the extremes for two ratios to form a proportion?

• The product of the means must be greater than the product of the extremes.

• The product of the means must be less than the product of the extremes.

• The products must be equal.

• The products must be different.

Do the ratios 1:2 and 3:4 form a proportion?

• Yes, because the product of the means is 6 and the product of the extremes is 6.

• No, because the product of the means is 6 and the product of the extremes is 4.

• Yes, because the product of the means is 4 and the product of the extremes is 6.

• No, because the product of the means is 4 and the product of the extremes is 4.

A baker uses 2 cups of flour to make 1 cake. How many cups of flour are needed to make 3 cakes?

• 2 cups

• 3 cups

• 4 cups

• 6 cups

Find the value of 'n' in the proportion n:3 = 3:9.

• 1

• 3

• 6

• 9