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
F is the answer lol BTW it's f
the answer will be C. (4,2)
Answer:
No, because the radicands are not the same
Step-by-step explanation:
Answer:
she has 4 pencils for herself
Step-by-step explanation:
if each student gets 2 than 23x2=46 so 50-46=4
