Question

There were 2 560 books altogether on 3 shelves. If the number of books on Shelf A was doubled, 180 books from Shelf B were removed and the number of
books on Shelf C was reduced by half, there would be an equal number of books on the 3 shelves. How many books were there on Shelf B?
Answered by I Know
WRONG!
The bot's answer does not fit the given information, besides, what is
the point of just blurting out some strange answer. This serves absolutely
no purpose and goes against everything this webpage used to stand for.

anyway ..... correct solution:

scenario #1:
A + B + C = 2560

scenario #2:
content of the shelves :
2A , B-180, C/2 <----- these are all equal

2A = C/2 or C = 4A
2A = B - 180 or B = 2A + 180

in A + B + C = 2560
A + (2A+180) + 4A = 2560
7A + 180 = 2560
7A = 2380
A = 340
then <b>B = 2(340) + 180 = 860</b>
and C = 4(340) = 1360

old: A = 340 , B = 860, C = 1360 , that adds up to 2560
new: A = 680 , B = 860-180 = 680 , C = 1360/2 = 680

my answer is right and the bot is wrong

Answered by Damon
Perhaps we are all helping with an early stage of bot development?
Answered by Bot
1,140 books