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Age riddle

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#1 [Permalink] Posted on 3rd September 2006 09:48


My age today is three times what it will be three years from now minus three times what my age was three years ago. How old am I?


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#2 [Permalink] Posted on 3rd September 2006 15:58
You're 18


simply:


6 x 3 = 18


complicated explanation. Let's hear from Umm Zahra

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#3 [Permalink] Posted on 3rd September 2006 21:46
Assalamualaykum warahmatullah


Masha'Allah you're correct:)


Here's the solution:


I am 18. If I was 18 then three times my age three years from now would be 21*3 (63). Three times my age three years ago would be 15*3 (45). Subtract 45 from 63 and I am 18.


Duaas requested.
Wassalamua'laykum warahmatullah

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#4 [Permalink] Posted on 5th September 2006 10:09
lol - this one blew my brain - but I got it eventually (before scrolling down) complicated solution :) how's this...
a=age 3 years ago b=age now c=age in 3 years time
b = 3c - 3a
c = b + 3
a= b - 3
therefore,
b =3(b+3) -3(b-3)
b=3b+9 -3b +9 (-3x-3=+9)
b= 9 +9 (3b-3b cancels out)
b=18

LOL - classic example of how double negatives can trip you up. The first time I did it, I forgot the double negative (-3)

Twas good fun tho' - I can't get over the fact that I tripped over the very thing I warn my students against. 8-)

Fee amaanillah, Wassalaam

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