Algebra Puzzle – Challenge 56
This is another great math puzzle and brain teaser for anyone interested in mathematics and critical thinking challenges.
Challenge:
Mr. Anderson is 36 years old. His son is 6 years old. After how many years Mr. Anderson’s age will become exactly 2.5 times of his son’s age?
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The correct answer is 14.
Let x be the number of years that Mr. Anderson’s age will become 2.5 times of his son’s age. Therefore:
36 + x = 2.5 (6 + x) → 36 + x = 15 +2.5 x → 21 = 1.5x → x = 14
In 14 years, Mr. Anderson will be 50 years, (36 + 14 = 50) which is 2.5 times of his son who will be 20 years.
Reza is an experienced Math instructor and a test-prep expert who has been tutoring students since 2008. He has helped many students raise their standardized test scores--and attend the colleges of their dreams. He works with students individually and in group settings, he tutors both live and online Math courses and the Math portion of standardized tests. He provides an individualized custom learning plan and the personalized attention that makes a difference in how students view math.
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