Question

If 265 identical boxes, each containing 24 books, weigh a total of 12,720 pounds, how much does each book weigh?

Answer 1

2

Answer 2

If all the books weigh identically the same. Assumptions assumptions.

Answer 3

@ganeshie8
@phi
@amistre64
@thmaster
@mathmale
@hoblos

Answer 4

This problem is worth figuring out on your own. Think about a simple problem:
if all the books you have weigh a total of 1 pound
and you have 1 book, how much does it weigh?

what math do you use to figure out the answer?

now try this one: if all the books weigh 1 pound and you have 2 books, how much does each weigh ?

can you answer those questions ?

Answer 5

divide?

Answer 6

what by what ?

Answer 7

pound by book

Answer 8

good. that is the basic idea

Answer 9

i did 256 X 24 = 6144 books divided by 12,720 pounds?

Answer 10

now how to use it for this problem?

the weight is
weigh a total of 12,720 pounds,

that part is easy.

but you also need the *number of books*
any idea how to figure out how many books you have ?

Answer 11

256 X 24 = 6144

Answer 12

right?

Answer 13

right idea, but wrong numbers

Answer 14

it is 265 (not 256)

Answer 15

oops

Answer 16

i got 0.5 pounds

Answer 17

per book

Answer 18

The important part is understanding the "big picture", divide weight by number of books to get pounds per book

the other important part is being careful when you work the numbers.

you should get
\[ \frac{12720 \text{ pounds}}{6360 \text{ books}} \]
I think you get 2 pounds/book
often spoken as "2 pounds per book"

Answer 19

ah okay thanks for the explanations its more clear now