Solve the problem by writing and solving a suitable system of equations.A chemistry department wants to make 3 liters of a 17.5% basic solution by mixing a 20% solution with a 15% solution. How many liters of each type of basic solution should be used to produce the 17.5% solution?
A. 0.5 liter of 15% and 2.5 liters of 20%
B. 1 liter of 15% and 2 liters of 20%
C. 2 liters of 15% and 1 liter of 20%
D. 1.5 liters of each
Answer: D
You might also like to view...
Solve the problem.The area A of a triangle is 10x2 + 7x - 12. If the height of the triangle is 2x + 3, find the length of its base.
A. 2(5x + 4)
B. 2(5x - 4)
C. 5x - 4
D. 
Solve for x: log-1 0.25 = x.
A. -0.602 B. 1.78 C. -0.25 D. -1.78
Complete the horizontal analysis for the comparative income statement. Round to the nearest tenth of a percent.
A. 1.6%, -71.4%, 1.3%, -6.4%, -1.7%, -190.4%, -2.1% B. -7.7%, -71.4%, -7.4%, -3.0%, -15.4%, -1.9%, -16.8% C. 7.1%, 41.7%, 6.9%, 2.9%, 13.4%, 1.9%, 14.4% D. 7.7%, 71.4%, 7.4%, 3.0%, 15.4%, 1.9%, 16.8%
Graph the system of inequalities.y ? -x2y ? x + 1y ? -5x ? -4
A. 
B. 
C. 
D. 