Question 1184720: 20 years ago, i was 2 years older than my sister. I am now 43years,
how old will my sister be in 2025?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39620)   (Show Source):
Answer by ikleyn(52799)  (Show Source):
You can put this solution on YOUR website! .
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.
Solved, and thoroughly explained.
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Actually, it is an entertainment problem, and a criterion for the right solution is
that it should not contain excessive calculations.
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