Ratio, Proportion and Percentages Puzzle – Challenge 28
This is a great math and critical thinking challenge to strengthen a child's grasp of math concepts in a fun way.
Challenge:
During the last three years, the price of a car has been reduced by \(10\%\) in the first year, \(20\%\) in the second year, and \(25\%\) in the third year. What percent of the original price is the total reduction of the car’s price?
A- \(36\%\)
B- \(40\%\)
C- \(46\%\)
D- \(54\%\)
E- \(55\%\)
The Absolute Best Book to Challenge Your Smart Student!
The correct answer is C.
Choose x for current price of the car. In the first year, the price of the car reduced to \(0.90 x\). Next year, it’ll be
\(0.90x × 0.80 = 0.72x\).
For the third year, the price of the car is: \(0.72x × 0.75 = 0.54 x\)
Therefore, \(46\%\) of the original price is the total reduction of the car’s price.
The Absolute Best Books to Ace Algebra
Related to This Article
More math articles
- How to Use Properties of Numbers to Write Equivalent Expressions?
- Mastering Series Convergence with the Ratio Test
- 4th Grade NYSE Math FREE Sample Practice Questions
- Full-Length ISEE Upper-Level Math Practice Test-Answers and Explanations
- Complete Guide to Mastering Logic and Truth Tables
- How Is the CBEST Test Scored?
- How to Make Math Lessons More Engaging?
- Overview of the PSAT / NMSQT Mathematics Test
- 4th Grade Common Core Math Worksheets: FREE & Printable
- 5 Best Reliable Calculators for School, Home, and Work
What people say about "Ratio, Proportion and Percentages Puzzle – Challenge 28 - Effortless Math: We Help Students Learn to LOVE Mathematics"?
No one replied yet.