SOLUTION: In a 40 -litre mixture of milk and water,the water is 10%.How much water is to be added to get a new mixture in which the water is 20%.

Question 836365: In a 40 -litre mixture of milk and water,the water is 10%.How much water is to be added to get a new mixture in which the water is 20%.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
w is how much water to add to increase the "concentration of water"

Solve for w.

Water in mixtures or solutions is usually treated as the carrier, and not as one of the materials to be referenced for concentration. This exercise reverses that idea.

My profile page has a lesson for this.
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