The molar absorption coefficients of two substances A and B at two wavelengths (denoted 1 and 2) are as follows: ε A1 , = 7.5 dm 3 mol -1 , cm -1 , ε B1 = 10.0 dm 3 mol -1 , cm -1 , ε A2 = 12.0 dm 3...

The molar absorption coefficients of two substances A and B at two wavelengths (denoted 1 and 2) are as follows: ε_A1, = 7.5 dm³
mol^-1, cm^-1, ε
_B1
= 10.0 dm³
mol^-1, cm^-1, ε_A2
= 12.0 dm³
mol^-1, cm^-1, ε_B2
= 8.0 dm³
mol^-1, cm^-1, The total absorbances of a solution at these two wavelengths in a cell of
length 5.0 mm were measured as 0.8 and 1.2. respectively. What are the molar concentrations of A and B in the solution?