Understanding Ratios and T-shirt Preferences

In this math lesson, students explore the concept of ratios using a survey about t-shirt color preferences among teenage girls. The lesson covers how to describe ratio relationships using words, provides examples and exercises with different t-shirt colors, and demonstrates how to calculate ratios from survey data. The importance of maintaining the order in ratios is emphasized throughout the lesson.

What is the primary purpose of the survey discussed in the lesson?

• To calculate the cost of manufacturing t-shirts.

• To find out the average age of teenage girls.

• To assess the quality of t-shirts.

• To determine the most popular t-shirt colors among teenage girls.

How is a ratio relationship described in the context of the survey?

• By calculating percentages.

• By using words to explain the relationship.

• By using numbers only.

• By drawing a chart.

In a 3 to 5 ratio, which t-shirt color comes first?

• Pink

• Red

• Orange

• White

Why is the order important when writing ratios?

• Because it is easier to remember.

• Because it changes the meaning of the ratio.

• Because it looks better.

• Because it affects the calculation.

What is the ratio of white to yellow t-shirts in the manufacturing chart?

• 3 to 5

• 5 to 3

• 4 to 7

• 7 to 4

If the ratio of yellow to white t-shirts is 4 to 7, what does this imply?

• Four yellow t-shirts are made for every seven white t-shirts.

• Seven yellow t-shirts are made for every four white t-shirts.

• Four white t-shirts are made for every seven yellow t-shirts.

• Seven white t-shirts are made for every four yellow t-shirts.

How many white t-shirts were preferred according to the survey?

• 19

• 10

• 7

• 5

What is the total number of colored t-shirts preferred by the girls?

• 19

• 7

• 15

• 25

What is the ratio of girls who preferred white t-shirts to those who preferred colored t-shirts?

• 7 to 19

• 5 to 3

• 19 to 7

• 3 to 5

Why is it necessary to add up the numbers of colored t-shirts?

• To find the total number of t-shirts.

• To check the accuracy of the survey.

• To determine the most popular color.

• To calculate the ratio of white to colored t-shirts.