Mumbling, Clawandfang, Stitch, lbt/cty_lover all got it right.
Indeed, the only possible answer is if they were both six years old.
If you were to take 2 away from the brother's age, he would be four and giving them to the sister would make her 8, thus making the sister twice his age.
Then, if you were to take away one more, the boy would only be three and giving that to the sister would make her nine, thus making the sister three times his age.
Many fall for this based on the account that it says "big sister" meaning that she is older, but you can't forget that even in the case of twins one is still older than the other, they're just a certian number of minutes apart and it's very easy to not apply that rule in the end.
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So, the score thus far:
Stitch: 80 points (10 Hint Points)
Flathead770: 0 points (10 Hint Points)
Mornai: 50 points (12 Hint Points)
Clawandfang: 410 points (14 Hint Points)
LBTFan13: 0 points (10 Hint Points)
Tails_155: 80 points (12 Hint Points)
lbt/cty_lover: 235 points (12 Hint Points)
Mumbling: 220 points (14 Hint Points)
action9000: 0 points (10 Hint Points)
mcr mad: 0 points (10 Hint Points)
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Okay Mumbling, your turn!
