Let
be the number of liters of the 10% solution she needs to use. She'd end up with a 6% solution with a volume of
liters. The starting solution contains 0.04*9 = 0.36 liter of salt. Each liter of the 10% solution contributes 0.1 liter of salt, so that

Solve for
:



so Mayra needs to add 4.5 liters of the 10% solution.
Answer:
B. s=8
Step-by-step explanation:
( I’m going to answer number 5.)
I got the answer 48, so it has to be 43.
Answer:
35
Step-by-step explanation:
its going up by 6 everytime
5 x 20 is 100
3 x 20 is 60
60%
.60