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Solve the Problem Using Matrices 4%4 \% Acid by Volume, Another 11%11 \%

Question 370

Multiple Choice

Solve the problem using matrices.
-A chemist has prepared two acid solutions, one of which is 4%4 \% acid by volume, another 11%11 \% acid. How many cubic centimeters of each should the chemist mix together to obtain 50 cm350 \mathrm {~cm} ^ { 3 } of a solution that is 6.24%6.24 \% acid.


A) No solution
B) 20 cm320 \mathrm {~cm} ^ { 3 } of 4%;20 cm34 \% ; 20 \mathrm {~cm} ^ { 3 } of 11%11 \%
C) 34 cm334 \mathrm {~cm} ^ { 3 } of 4%;16 cm34 \% ; 16 \mathrm {~cm} ^ { 3 } of 11%11 \%
D) 3.12 cm33.12 \mathrm {~cm} ^ { 3 } of 4%;46.88 cm34 \% ; 46.88 \mathrm {~cm} ^ { 3 } of 11%11 \%

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