Question:

The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?

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When dealing with age problems involving intervals, express the ages in terms of a variable and form an equation based on the sum or other given information.
Updated On: Apr 3, 2025
  • 4 years
  • 5 years
  • 6 years
  • 8 years
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The Correct Option is A

Solution and Explanation

Let the age of the youngest child be \( x \). Then the ages of the other children will be \( x + 3 \), \( x + 6 \), \( x + 9 \), and \( x + 12 \), as they are born at intervals of 3 years.
The sum of their ages is: \[ x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 50 \] Simplifying the equation: \[ 5x + 30 = 50 \] \[ 5x = 50 - 30 \] \[ 5x = 20 \] \[ x = 4 \] Thus, the age of the youngest child is 4 years.
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