Question

The product of the page number on two facing pages of a book is 306. Find the page numbers

Answer 1

17*18=?

Answer 2

take the square root of 306, it = 17.493. The number below and above it multiply to 306

Answer 3

x = 1 page
x + 1 = the other page

x(x + 1) = 306
x^2 + x - 306 = 0
(x - 17)(x + 18) = 0

am I doing this right ehuman ??

Answer 4

yes you are

Answer 5

but I am getting a negative number

Answer 6

I'm trying to figure why one comes up negative though

Answer 7

I know the answer is 17 and 18, but I can't figure out why my numbers are 17 and -18 ??

Answer 8

It must be late, I'm baffled

Answer 9

me too.....my brain hurts

Answer 10

@Hero ....can you help with this one

Answer 11

@ranga...we need to borrow your brain

Answer 12

x = 17 or x = -18. Discard the solution that does not apply. A negative page number does not apply.
So x = 17 and the next page is x+1 = 18

Answer 13

ahhhhh x = 17, -18 is extraneous. the answer is x = 17, x+1 = 18

Answer 14

oh.....I am feeling stupid right now...thanks ranga

Answer 15

Smart move @ranga

Answer 16

ranga beat me to the punch while i was typing

Answer 17

it's lare lol.

Answer 18

Thanks @Hero

Answer 19

late

Answer 20

quick fingers

Answer 21

thanks guys...you always know the answers.