math question

[EsPo]

ok.. the problem is

you can buy 2pounds, 3 ounces of sand for 3.13$ . you can also buy 0pounds, 6 ounces of sand for .73$ . the sand has a fixed rate for ounces and pounds and you also pay a constant rate for the box it comes in.

normally i wouldnt have a problem with this problem.. but the damn box!! how do i do this?

[Brak]

yeah i cant figure it out either...
MAYBE BECAUSE ITS A STATEMENT NOT A QUESTION

[EsPo]

Originally posted by Brak
yeah i cant figure it out either...
MAYBE BECAUSE ITS A STATEMENT NOT A QUESTION

maybe you shouldnt post here if YA DONT KNOWW!! anyone with any common sense would realise im trying to find the price of
p
oz
and the box

so BUZZ OFF!

[Brak]

thats easy, find out how many oz is in a pound, then convert the 3 pounds 2 oz into oz, the divide by how many oz are in a pound, or you can do it a different way., then divide the 6 oz by 6 to find the price of the oz, and the box is undefined because you dont know how many lbs or oz are in it. DURR

[Gitaroo Man]

brak, that was the most unlcear explanation ever

[EsPo]

Originally posted by Gitaroo Man
brak, that was the most unlcear explanation ever

i got it.. but i dont think boxes are undefined..

[FordPrefect]

Re: math question

Originally posted by EsPo
a fixed rate for ounces and pounds and you also pay a constant rate for the box it comes in.

Huh? The way I'm looking at that, it's either redundant, or you also have to pay for a box, plus the sand that goes into the box. I'm leaning toward redundant though.

Espo, please clear that up for me, and I might be able to clear up the problem for you.

[EsPo]

<b>without the box</b>
mathematically written
2p + 3oz = 3.13
0p + 6oz = .73

next step
multiply the top equation by 2 so that i could get the 2nd coefficient in each step equal
4p + 6oz = 6.26
0p + 6z = .73

next
subtract to get one variable/coefficient alone

4p + 6oz = 6.26
- 0p + 6oz = .73
-----------------
4p = 5.53

next step
divide by the coefficient
4p = 5.53
-- ----
4 4

p = 1.3825

next step
substitute into one of the equations
2(1.3825) + 3oz = 3.13

Math

2.765 + 3oz = 3.13

move over the 2.765 to get variable/coefficient by itself

3oz = .365

divide by 3

3oz = .365
--- ----
3 3

oz = .1216(6 reapeating)
p = 1.3825

[EsPo]

<b>with box(i dont know what to do.. this is a guess)</b>
2p + 3oz = 3.13
0p + 6oz = .73

b + 19oz = 3.13
b + 6oz = .73
ect ect continue problem after here.
^^^^^^^^^^^^^
is that right?

[Gitaroo Man]

thats what i was thinking but i'm not sure

[jwyke]

2lbs, 3oz = 35 oz
b=box
s=sand

b + 35s = 3.13 (box + 35 oz sand = $3.13)
-(b + 6s = .73) (box + 6 oz sand = $.73)

29s = 2.40 (subtract one problem from the other)

s = 0.0828 (the price per ounce for the sand)

Substitute this figure back into the equation to get the price for the box.

b + 6(0.0828) = .73

b = 0.2332 (the price for the box)

*Numbers have been rounded to protect the innocent.