I have been stuck on this question please help me solve it?

Question

The following reaction is used in some self-contained breathing devices as a source of O2(g).
4KO2(s)+2CO2(g)⇌2K2CO3(s)+3O2(g)Kp=28.5at25∘C
Suppose that a sample of CO2(g) is added to an evacuated flask containing KO2(s) and equilibrium is established. The equilibrium partial pressure of CO2(g) is found to be 7.33×10−2 atm .

part A:

What is the equilibrium partial pressure of O2(g)?

part B:

What is the total gas pressure at the equilibrium?

Thank you

Answer 1

.......4KO2+2CO2⇌2K2CO3+3O2(g)
E.....solid..7.33E-2.solid...x
Kp = p(O2)^3/p(CO2)^2
Substitute and solve for pO2

Ptotal = pCO2 + pO2

Answer 2

hyik