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find how many quarts of 4% butterfat milk and 1 % butterfat milk should be mixed to yield 75% quarts of 2 % butterfat milk. i have no idea how to even begin this problem...

Mathematics
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You need to state the problem correctly. 75 % quarts of 2% butterfat milk makes no sense.
i meant 75 quarts not %...sorry...
Let x = number of quarts of 4% milk to use. Then 75-x = number of quarts of 1% milk to use. .04x = butterfat in the x quarts of 4% milk .01(75-x)= butterfat in the 75-x quarts of 1% milk .02(75)= butterfat in the final 75 quarts of milk. So: .04x+.01(74-x)=.02(75) Solve it and you will have the number of quarts of 4% milk to use.

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Other answers:

why is it 74-x?
It's not. It's 75-x
Sorry for the typo
oh ok! its fine
thank you!!!!!!
yw
do you do distributive property first?
I would multiply each term by 100 to get rid of those decimals
event he numbers that aren't decimals multiply by 100?
including x?
each term. There are two terms on the left and one term on the right
i dont understand
|dw:1352079284539:dw|
is the answer 12.5?
That's not what I got. Post your work.
And I will see what you did wrong.
4x+1(75-x)=2(75) 7x+75-x=150 6x+75=150 6x=75 x=12.5
Where did you get 7 x?
4x+75-x=150 3x=75 x=25
i have no idea why i wrote that. haha. okay i tried again and got 25?
how would i find the 1%?
im so confused ;(
Do you remember when I wrote that x = the amount of 4% milk to use and that 75-x = the amount of 1% milk to use.?
yes
so it should be 1x instead of 4x? so 1x+1(75-x0-2(75)?
0) *
sorry. 1x+1(75-x)=2(75) ?
So x = 25 and x is the amount of 4% milk to use. 75-x=75-25=50 and 75-x is the amount of 1% milk to use.

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