anonymous
  • anonymous
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
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Mertsj
  • Mertsj
You need to state the problem correctly. 75 % quarts of 2% butterfat milk makes no sense.
anonymous
  • anonymous
i meant 75 quarts not %...sorry...
Mertsj
  • Mertsj
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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More answers

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