Ratios and Proportions in Problems

The video tutorial covers solving ratio problems, focusing on examples involving calories and grams, nitrogen and potassium, and disinfectant and water. The teacher demonstrates how to set up and solve these problems using a structured approach, emphasizing the importance of maintaining balance in mathematical operations.

What is the main focus of the North Carolina end of grade assessment discussed in the video?

• Algebraic equations

• Geometry problems

• Statistics

• Ratio questions

If a serving of crackers has 150 calories and 30 grams, how many calories are in 6 grams?

• 30 calories

• 25 calories

• 20 calories

• 15 calories

In the problem involving nitrogen and potassium, what is the ratio of nitrogen to potassium?

• 9 to 12

• 27 to 36

• 12 to 9

• 36 to 27

How many units of potassium are there if there are 36 units of nitrogen?

• 24 units

• 18 units

• 27 units

• 30 units

What is the ratio of disinfectant to water in the tank cleaning problem?

• 1 cup to 3 gallons

• 2 cups to 4 gallons

• 3/4 cup to 2 gallons

• 1/2 cup to 1 gallon

How many cups of disinfectant are needed for 20 gallons of water?

• 15 cups

• 17 1/2 cups

• 22 1/2 cups

• 20 cups