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प्रश्न
After 12 years, Kanwar shall be 3 times as old as he was 4 years ago. Find his present age.
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उत्तर
Let Kanwar’s present age be = x years
So, 4 years ago his age would be = x – 4 years
After 12 years his age would be = 12 + x years
According to the question,
12 + x = 3(x – 4)
12 + x = 3x – 12
x – 3x = –12 – 12
–2x = –24
x = 12
Hence, the present age of Kanwar’s is 12 years.
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