What is the Equilibrium Constant for the Reaction Between PbCl2 and Ag+?

[Miike012]

Given the following reaction data at 25oC,
PbCl2  Pb+2 + 2Cl- Kc = 1.8*10-10
2Ag+ + 2Cl-  2AgCl Kc = 2.48*105
Calculate Kc for the reaction of PbCl2 and Ag+.
a. 7.2*10-16
b. 1.4*1015
c. 4.4*105
d. 4.5*10-5
e. can not solve

Is this solveable? I don't know where to start>?

 

[Borek]

Start writing reaction equation and all Kc formulas. If you were not ignoring template, you would have it ready.