Calculate the value of K_{p} for the equation

C (s) + CO_{2} (g) ⇌ 2CO (g) K_{p} = ?

given that at a certain temperature

C (s) + 2H_{2}O (g) ⇌ CO_{2 }(g) + 2H_{2} (g) K_{p1} = 3.11

H_{2} (s) + CO_{2} (g) ⇌ H_{2}O(g) + CO(g) K_{p2} = 0.625