The inversions in array $A$ are $(30, 15), (30, 26), (30, 29), (48, 34), (48, 26), (48, 29), (34, 26), (34, 29)$.
Number of inversions = $8$
The inversions in array $B$ are $(-30, -48), (-30, -34), (-15, -48), (-15, -34), (-15, -26), (-15, -29), (-26, -29)$.
Number of inversions = $7$
Therefore, $X = 8$ and $Y = 7$
$X + 2Y = 8 + 2*7 = 8 + 14 = 22$