A student of Mathematics was asked how old he was. His reply was quite ingenious. " Take my age three years hence, multiply it by 3 and then subtract 3 times my age three years ago and you will know how old I am." Can you tell how old he is?
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Correct option is A)
Present age of the person be x years.
Then as per the question, he said
"three years hence multiply it by 3 means 3(x+3) and then subtract three times my age 3 years ago means 3(x−3)".
⇒3(x+3)−3(x−3)=x
⇒3x+9−3x+9=x
⇒x=18
Step-by-step explanation:
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