Question 1149432
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Try this as an alternative to the standard algebraic process for solving "mixture" problems, as shown in the other two responses you have received.<br>
If you understand this method (and an algebraic solution is not required) it will get you to the answer much faster and with much less work.<br>
(1) You are mixing 3% milk and 84% milk ingredients to get a mixture that is 78% milk.
(2) 78% is 25/27 of the way from 3% to 84%.  (Look at the three numbers on a number line -- 3, 78, and 84.  3 to 78 is 75; 3 to 84 is 81; 75/81 = 25/27.
(3) That means 25/27 of the mixture is the higher percent ingredient.<br>
ANSWER: 25/27 of the 135 liters = 125 liters of the 84% ingredient; 2/27 of 135 liters = 10 liters of the 3% ingredient.<br>