Question 1184720
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20 years ago, I was 2 years older than my sister. I am now 43years,
how old will my sister be in 2025?
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If 20 years ago you were 2 years older than your sister, then now, today, this year you are 2 years older than she is now.

Since now you are 43 years old, your sister's age is 41 years.


So, in 2025, 4 years from today, your sister will be 41 + 4 = 45 years old.
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Solved, and thoroughly explained.



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Actually, &nbsp;it is an entertainment problem, &nbsp;and a criterion for the right solution is 

that it should not contain excessive calculations.