SOLUTION: John is 1 year old. Johns sister is half his age. When john is 100 years old, How old is his sister?

Question 813634: John is 1 year old. Johns sister is half his age. When john is 100 years old, How old is his sister?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
j = 1
s = j - (1/2)
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j = 100
s = j - (1/2)
s = 100 - (1/2)
s = 99 + (1/2)
---
Answer:
when john is 100 his sister is 99 and 1/2 years old
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