Multiple choice

A jar contains 28 liters of milk and 8 liters of water. If (x) liters of milk and (x) liters of water are added to the mixture, then 40% of the new mixture is 20 liters. Find the value of (x).

  1. $14$
  2. $7$
  3. $15$
  4. $18$
  5. $20$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Original mixture: 28L milk + 8L water = 36L total. After adding x liters each: (28+x)+(8+x)=36+2x total. 40% of new mixture = 20L, so new mixture = 20/0.4 = 50L. Therefore 36+2x=50, 2x=14, x=7.

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