Logic Q

[phylay]

Originally posted by Amina-DZ
Actually since:
"which left Sabrina broke and gave Samantha a total of $80.00."

Samantha at this stage had all the money i.e. x + y and that's $80

hmmm. wasn't that clear....

[Amina-DZ]

Originally posted by phylay

Originally posted by Amina-DZ

Originally posted by phylay
and 4y - x = 80
gives 12y -5y = 240,
y = 240/7 and x = 400/7

I'd say 6y-2x = 80

why?
Sab gave sam y in a first illegal exchange and then 3y-x in the second and last one!

sabrina :x, Samantha: y
sab: x-y, sam: 2y
Samantha then gave Sabrina back as much as Sabrina had left.
sab: 2x-2y, sam = 2y-x+y = 3y-x
Sabrina then gave Samantha as back as many dollars as Samantha had left,
sab =2x-2y -3y+x = 3x-5y, sam = 6y-2x
which left Sabrina broke and gave
3x = 5y or x = 5y/3

"Sabrina then gave Samantha as back as many dollars as Samantha had left, which left Sabrina broke and gave Samantha a total of $80.00."

[phylay]

Need more english lessons

[Amina-DZ]

LOL

[phylay]

pfff, nofing fany ere

[Amina-DZ]

alri'e ma'e

[evanescence]

finalement etais laquelle la logique avec les hats bleu et white ,et avec le numero?! le premier ne m'a pas donne les nombre des fois j'ai dis j'aime sortir au resto ?!