A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 40 years now, find son’s age 4 years ago?
Question
A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 40 years now, find son’s age 4 years ago?
Solution
Let's solve this step by step:
Step 1: Let's denote the son's current age as 'x' years.
Step 2: According to the problem, when the son was born, the father was 'x' years old.
Step 3: This means the father is 'x' years older than the son.
Step 4: We know that the father's current age is 40 years.
Step 5: So, the son's current age 'x' would be the father's current age minus the difference in their ages. In other words, x = 40 - x.
Step 6: Solving this equation gives x = 20. So, the son is currently 20 years old.
Step 7: The question asks for the son's age 4 years ago. So, we subtract 4 from the son's current age.
Step 8: Therefore, the son's age 4 years ago was 20 - 4 = 16 years.
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