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Question
A father tells his son, "I was of your present age when you were born". If the father is now 36, how old was his son 5 years ago?
A father tells his son, "I was of your present age when you were born". If the father is now 36, how old was his son 5 years ago?
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Solution
The correct option is A 13
When the son is born, let the father be 'x' years of age.
When his son is 'x' years old, then father is '2x' years old.
⇒2x=36⇒2x=36 or x=18x=18
∴∴ 5 years ago, son is 13 years old.
When the son is born, let the father be 'x' years of age.
When his son is 'x' years old, then father is '2x' years old.
⇒2x=36⇒2x=36 or x=18x=18
∴∴ 5 years ago, son is 13 years old.
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