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
- Top 10 Tips to Overcome ATI TEAS 7 Math Anxiety
- Using Number Lines to Compare and Order Rational Numbers
- 5th Grade OST Math FREE Sample Practice Questions
- How to Solve Parallel Lines and Transversals Problems? (+FREE Worksheet!)
- The Ultimate 6th Grade NSCAS Math Course (+FREE Worksheets)
- Top 10 6th Grade STAAR Math Practice Questions
- How to Compare Linear Functions: Equations, Tables, and Graphs
- Best Financial Calculators in the Market
- Intelligent Math Puzzle – Challenge 79
- 3rd Grade WY-TOPP Math Worksheets: FREE & Printable
What people say about "Ratio, Proportion and Percentages Puzzle – Challenge 25 - Effortless Math: We Help Students Learn to LOVE Mathematics"?
No one replied yet.