Algebra 30 - Solving Percentage Problems with Linear Equations

Professor Von Schmohawk introduces the concept of percentages and demonstrates how to solve real-world problems using algebra. The video covers calculating total road accidents in Sweden, analyzing percentage changes, and solving investment profit and loss problems. The tutorial emphasizes understanding percentage increases and decreases, and how they apply to different scenarios.

What percentage of road accidents in Sweden involve an elk?

• 40%

• 30%

• 20%

• 10%

If 24 road accidents involved elks, how many total road accidents occurred in January?

• 160

• 120

• 100

• 140

By what percentage did the number of road accidents increase from January to February?

• 15%

• 10%

• 20%

• 25%

How many total road accidents occurred in February after a 25% increase?

• 160

• 130

• 140

• 150

What is the percentage decrease in road accidents from February to March?

• 25%

• 20%

• 15%

• 10%

What was the initial value of Adrian's investment in Smello-Phone?

• $400

• $500

• $200

• $300

What was the final value of Adrian's total investment portfolio?

• $1500

• $1000

• $1200

• $1800

What percentage of its initial value did the Alaskan Swimwear stock drop to?

• 100%

• 75%

• 25%

• 50%

What was the final value of the Smello-Phone investment as a percentage of its initial value?

• 400%

• 100%

• 200%

• 300%

What will the next lecture topic focus on?

• Geometry

• Statistics

• Mixtures of solutions

• Advanced algebra