Ratio, Proportion and Percentages Puzzle – Challenge 25
Looking for an incredibly challenging math and critical thinking puzzle? If so, then this math puzzle is just for you! Let's challenge your brain!
Challenge:
20 liters of 40 percent antifreeze in fuel are mixed with 40 liters of 10 percent antifreeze in fuel. The percentage of antifreeze in the new solution is:
A- \(15\%\)
B- \(20\%\)
C- \(25\%\)
D- \(30\%\)
E- \(35\%\)
The Absolute Best Book to Challenge Your Smart Student!
The correct answer is B.
The total amount of the mixture of two fuels is 60 liters. (20 liter plus 40 liters) Let’s find the total of the antifreeze.
The sum of \(40\%\) of 20 liters and \(10\%\) of 40 liters is:
\(0.40 × 20 + 0.10 × 40 = 8 + 4 = 12\)
Of 60 liters of the mixture, 12 liters are antifreeze. So, the percentage of antifreeze in the new solution is:
\(12 ÷ 60 = 0.20 = 20\%\)
The Absolute Best Books to Ace Algebra
Related to This Article
More math articles
- How Is the CLEP College Algebra Test Scored?
- Finding Derivatives Made Easy! Derivative of A Chain of Functions
- Top 10 8th Grade PSSA Math Practice Questions
- Integral Approach to Cumulative Growth
- 10 Most Common 8th Grade IAR Math Questions
- Best Math Websites for Students
- How to Solve Scale Drawings Word Problems
- FREE ISEE Middle Level Math Practice Test
- How to Convert Between Polar and Rectangular Coordinates
- The Best Strategies For Successful Math Tutoring Online
What people say about "Ratio, Proportion and Percentages Puzzle – Challenge 25 - Effortless Math: We Help Students Learn to LOVE Mathematics"?
No one replied yet.