Understanding Percentages and Algebra

What mathematical concept is used to solve real-world problems involving percentages?

• Algebra

• Calculus

• Geometry

• Trigonometry

If 20% of road accidents in Sweden involve elks and there are 24 such accidents, how many total accidents occurred?

• 100

• 120

• 200

• 150

In February, the number of road accidents increased by 25% from January. If there were 120 accidents in January, how many were there in February?

• 160

• 130

• 140

• 150

If the number of accidents in March returns to January's level, what percentage decrease does this represent from February?

• 25%

• 20%

• 30%

• 15%

Adrian's investment in Alaskan Swimwear dropped to what percentage of its initial value?

• 25%

• 50%

• 100%

• 75%

The Smello-phone stock increased to what percentage of its initial value?

• 350%

• 300%

• 250%

• 200%

What was the total final value of Adrian's stock portfolio after her investments?

• $1200

• $1300

• $1400

• $1500

If Adrian invested $400 in Smello-phone, how much did she invest in Alaskan Swimwear?

• $400

• $500

• $600

• $700

What is the initial value of the Smello-phone investment if the final value is 300% of the initial?

• $500

• $600

• $300

• $400

How can algebra help in solving percentage problems?

• By simplifying complex calculations

• By visualizing data

• By predicting future trends

• By providing exact solutions