Equilibrium · Relation between kp and kc

Consider the general reaction given below at 400 K

$\ce{xA(g) <=> yB(g)}$

The values of $K_\mathrm{p}$ and $K_\mathrm{c}$ are studied under the same condition of temperature but variation in x and y.

(i) $K_\mathrm{p} = 85.87$ and $K_\mathrm{c} = 2.586$ appropriate units

(ii) $K_\mathrm{p} = 0.862$ and $K_\mathrm{c} = 28.62$ appropriate units

The value of x and y in (i) and (ii) respectively are: