A couple had three sons and they were born at an interval of 3 years. The total age of the three sons is 24 years. What is the age of the youngest son?
Solution: Let the ages if three sons be x, x+3, x+6.
x+x+3+x+6 =24 => 3x = 24 -9 => x =5. .'. Youngest son's age is 5 years.
what if the total age is 26
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