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Age of tarun is 7 years more than the age of rakhi. Tarun's grandfather is 3 times as old as tarun. What are their ages if rakhi's age was y 3 years back.
Given:
Age of Tarun is 7 years more than the age of rakhi. Tarun's grandfather is 3 times as old as Tarun.
Age of Rakhi 3 years ago $=y$.
To do:
We have to find their present ages.
Solution:
Present age of Rakhi$=y+3$.
Present age of Tarun$=(y+3)+7=y+10$.
Present age of Tarun's grandfather$=3(y+10)=3y+30$.
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