Brain Teasers
Impossible Age
When Luke, the new kid, asked how old Annabelle was, she replied, "In two years, I'll be twice as old as I was five years ago."
How old is Annabelle?
How old is Annabelle?
Answer
Annabelle is twelve!Hide Answer Show Answer
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Comments
I don't get it! Could you explain how?
I though it'd be 8 because in 2 years she'd be 10, which is twice as old as 5 years ago..when she was 5..
I though it'd be 8 because in 2 years she'd be 10, which is twice as old as 5 years ago..when she was 5..
5 years ago from current age, not the age in 2 years
Then it is just
x+2 = 2(x-5)
where x is the current age
x+2 ("in 2 years")
= ("I will be")
2* ("twice")
(x-5) ("as old as 5 years ago")
I hope that helps.
x+2 = 2(x-5)
where x is the current age
x+2 ("in 2 years")
= ("I will be")
2* ("twice")
(x-5) ("as old as 5 years ago")
I hope that helps.
I like that one! And I got it right, too!! So much fun! I know over doing it, right? Not to me. Math is where I excell (Not spelling) and that's why I loved this one. Great job!
Eh... thx? o.o ha ha ha thx 4 erm overdoin it i guess?
Ohhhh, I get it now! That did help, thanks!
XD im hsppy to know you get it XD
This sort of thing has been done to death. While I am glad if it's new to you, it should have been disqualified because except for the exact numbers it is repetitive of past teasers.
Nice word problem
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