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?

Maths / Basic Math — Multiple-choice practice

  1. A. 8 years
  2. B. 10 years
  3. C. None of these
  4. D. 4 years

Correct answer

4 years

Explanation

Explanation Step 1: Let's denote the age of the youngest child as x. The ages of the 5 children will be x, x + 3, x + 6, x + 9, and x + 12. Step 2: Calculate the sum of their ages. x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 50 Step 3: Simplify the equation. 5x + 30 = 50 Step 4: Solve for x. 5x = 20 x = 4

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