Posted by Linsey on Thursday, June 9, 2011 at 11:24am.
how much low fat milk (1%) fat and how much whole milk (4%) fat should be mixed to make 5 gal of reduced fat mild 2%

Cupler  MathMate, Thursday, June 9, 2011 at 12:02pm
Method 1 using Algebra:
Let x=volume of 1% milk in gallons
then (5x)=volume of 4% milk
5*2%=x*1%+(5x)*4%
Solve for x:
10=x+204x
3x=10
x=3 1/3 gal. (1% milk)
5 3 1/3 = 1 2/3 gal. (4% milk).
Method 2 (mental calculations)
Mentally put the 1% and 4% on a linear scale as follows:
1%..................................4%
The target percentage is 2%:
1%......2%..............4%
Take the difference:
.....1.............2.........
these are the ratio of the 4% and 1% milk respectively (note the inversion of position), i.e.
4% milk : 1% milk = 1:2
Therefore
volume of 4% = 5*1/(1+2)=1 2/3 gal
volume of 1% = 5*2/(1+2)=3 1/3 gal.
Answer This Question
Related Questions
 Math  How much low fat milk(1%) and whole milk(4%) should be mixed to make 5 ...
 Algebra  total value problems & mixture problems How much lowfat milk (1%fat) ...
 algebra  A reduced fat cookie contains 9g of fat per sereving. In order for ...
 Math  A reduced fat cookie vontains 6g of fat per serving. In order for food to...
 math  A and B farm A produces milk with 3 ½ percent fat and farm B produces ...
 Algebra  A reduced fat cookie contains 12g of fat per serving. In order for ...
 Algebra 1  a reduced fat cookie contains 3g of fat per serving. In order for ...
 Health  Trans fat can be best be limited in the diet by (A) Drinking lowfat ...
 math  A reduced fat cookie contains 7g of fat per serving. In order for food to...
 math  A reduced fat cookie contains 2g of fat per serving. In order for food to...
More Related Questions