Answer:
The answer is either 5.26 or 5 I think its 5.26
Step-by-step explanation: The reason why I think its the two answers I said is because 10 is 10 percent of 100 so 9.5 is 9.5 percent which makes me think that
Answer:
y = x + 2
Step-by-step explanation:
The slope is 1
The y-intercept is 2
50 ounces of 15% saline solution contains 0.15*50 = 7.5 ounces of salt.
Let x be the amount of pure water you add to this solution. Then you end up with (x + 50) ounces of this new solution. The amount of salt stays the same.
You want the new solution to have a concentration of 10%. This means you need
7.5 / (x + 50) = 0.1
==> 7.5 = 0.1(x + 50)
==> 7.5 = 0.1x + 5
==> 2.5 = 0.1x
==> 2.5/0.1 = 0.1x/0.1
==> x = 25
