Question

How many L of an 85% alcohol solution must be mixed with 6 L of a 55% alcohol solution to make a 65% solution?

Answer 1

3 Liters of the 85% Solution

Explanation:

You have to draw your buckets. I can't on computer so imagine the fraction bar is the bottom of the buckets.

`(85)/(x)+(55)/(6)=(65)/(x+6)`

Then we multiply the top of the buckets with the bottom:

85x+330=65x+390

Now we simplify and solve

20x=60

x=3

You need 3 liters of the 85% solution!