Brain teaser.

#1 (**permalink**) 10-28-2007, 10:20 PM

Mary is two times as old as Nancy. Nancy is 1/3 Lucy's age. Who is the oldest?

Mary
Lucy
Nancy

I had to use my hands to figure this one out. lol

#2 (**permalink**) 01-08-2008, 06:58 AM

Lucy, because if we call a number it comes like this:

Lucy is 3 years old
Then Nancy is 1/3 of 3, so 1 year
Mary is Nancyx2, so 2 years old.

If we say Lucy is 30 years:
Then Nancy is 1/3 of 30, so 10 years
Mary is Nancyx2, so (10x2)= 20 years old.

Jeanie · #3 (**permalink**) 01-08-2008, 09:08 AM

Wow, you all must be bored! LoL..

#4 (**permalink**) 01-08-2008, 01:23 PM

Just like this things

Jeanie · #5 (**permalink**) 01-08-2008, 08:03 PM

Gotcha..

#6 (**permalink**) 09-29-2008, 06:28 PM

I believe it's Mary.

Jeanie · #7 (**permalink**) 09-30-2008, 10:14 AM

The answer is Lucy because no matter the # you use for the ages, 1/3 is not a lot taken away.

Ex:
Say Nancy 10, to figure out how old Lucy is since Nancy is 1/3 of Lucy's age, Lucy would have to be 30 and Mary is 2 times Nancy's age which would make Mary 20.

Mary is 2 times Nancy's age: 10x2 , So Mary is 20
Nancy is 1/3 Lucy's age: so in order for Nancy to stay 10 you need to multiply 10 by 1/3 and you get 30, so Lucy is 30 which would make Lucy the oldest.

Nancy: 10
Mary: 20
Lucy: 30

Don't believe me, use any # for the starting age..will prove Lucy will always be the oldest..

~Jeanie