A chemist needs to mix a 12% acid solution with a 32% acid solution to obtain an 8‐liters mixture consisting of 20% acid. How many liters of each of
the acid solutions must be used?

so, converting firstly the mixed fractions to improper fractions and then "adding".

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is

2*2=3

two times two is four

i dont understand what you mean so pls comment