with explanation please

Exercise / To determine the concentrations (mol/L) of CO(NO3)2 (A) and Cr(NO3)3 (B) in an unknown sample, the following representative absorbance data were obtained Measurements were made in 1.0 cm glass cells A (mol/L) B (mol/L) 510 nm 575 nm 1.5 x 10-1 0 0.714 0.097 0 6 x 10-2 0.298 0.757 Unknown Unknown 0.671 0.330 1. Calculate the four molar absorptivities: EA(510), EA(575), EB(510), and EB(575) 2. Calculate the molarities of the two salts A and B in the unknown