99 POINTS!!!
QUESTION 1

Taven mixes 18 liters of 14% acid solution with a 35% acid solution, which results in 23% acid solution.

Let x represent the number of liters of 35% solution used and let y represent the number of liters of mixture. Which system of equations can be used to find the number of liters of 35% acid solution in the mixture?

y = x + 18; 0.23y = 0.35x + 4.14

y = x + 18; 0.14y = 0.35x + 4.14

y = x + 18; 0.35y = 0.23x + 2.52

y = x + 18; 0.23y = 0.35x + 2.52
1 points

QUESTION 2

Faith mixes 14 liters of 12% acid solution with a 30% acid solution, which results in an 18% acid solution.

Let x represent the number of liters of 30% acid solution used, and let y represent the number of liters of mixture. Which system of equations can be used to find the number of liters of 30% acid solution in the mixture?


y = x + 14; 0.12y = 0.3x + 4.2

y = x + 14; 0.18y = 0.3x + 4.2

y = x + 14; 0.12y = 0.3x + 1.68

y = x + 14; 0.18y = 0.3x + 1.68
1 points

QUESTION 3

Marie mixes 16 liters of 78% acid solution with a 25% acid solution to make a 41% acid solution.

How many liters of 25% solution did she use?

8 liters

12 liters

13.7 liters

37 liters
1 points

QUESTION 4

Marie mixes 16 liters of 18% acid solution with a 27% acid solution to make a 21% acid solution.

How many liters of 27% solution did she use?

8 liters

12 liters

13.7 liters

16 liters
1 points

QUESTION 5

Faith mixes 14 liters of 12% acid solution with a 30% acid solution to make an 18% acid solution.

How many liters of 30% solution did she use?


12 liters

7 liters

21 liters

4.7 liters