Percentages and Proportions Practice

The video tutorial covers various math problems and exercises, including calculating earnings from a bake sale, comparing walking rates, writing equations for paint mixing, and understanding percents. Students learn to model percents and convert them to fractions and decimals. The tutorial includes exercises on representing shaded regions as percentages and solving problems related to granola bars and lawn mowing services.

What is the correct equation to calculate the earnings from selling plates of cookies at a bake sale?

• d = c - 4

• d = c + 4

• d = c / 4

• d = 4c

Who walks faster: someone who covers 60 feet in 20 seconds or someone who covers 25 feet in 5 seconds?

• Cannot be determined

• Both walk at the same speed

• Person walking 25 feet in 5 seconds

• Person walking 60 feet in 20 seconds

If 1 pint of red paint is mixed with 3 pints of yellow paint, what is the equation to find the amount of yellow paint?

• y = r - 3

• y = r / 3

• y = 3r

• y = r + 3

What percentage of Rob's fruit farm is used to grow Fuji apples if Empire and Macintosh apples occupy 25% and 30% respectively?

• 45%

• 55%

• 35%

• 40%

How do you express 80% as a fraction in its simplest form?

• 4/5

• 2/5

• 8/10

• 1/2

Convert 32% to a decimal.

• 0.032

• 3.2

• 0.32

• 32.0

What is the decimal representation of 55%?

• 5.5

• 55.0

• 0.55

• 0.055

If 70% of students got an A, what fraction of students does this represent?

• 70/100

• 7/10

• 3/10

• 1/2

How would you distribute 100 lawns among 3 employees if one employee mows 30%?

• 30 lawns for one, 45 for each of the others

• 30 lawns for one, 40 for each of the others

• 30 lawns for one, 35 for each of the others

• 30 lawns for one, 50 for each of the others

If a task is divided equally among three employees, what percentage of the task does each employee complete?

• 25%

• 33.33%

• 30%

• 50%