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Question
A person was asked to state his age in years. His reply was, take my age three years hence multiply it by 3 and then subtract three times my age three years ago and you will know how old I am. What was the age of the person?
A person was asked to state his age in years. His reply was, take my age three years hence multiply it by 3 and then subtract three times my age three years ago and you will know how old I am. What was the age of the person?
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Solution
The correct option is C 18 years
Let the present age of the person be x years
His age after 3 years hence =(x+3) years
His age 3 years ago =(x−3) years
Then according to given condition, his present age will be (x+3)3−3(x−3)
=(3x+9−3x+9)=18 years.
Let the present age of the person be x years
His age after 3 years hence =(x+3) years
His age 3 years ago =(x−3) years
Then according to given condition, his present age will be (x+3)3−3(x−3)
=(3x+9−3x+9)=18 years.
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