Color Fish Puzzle

ANS: 24
(1) equ =>2+2+2=6
(2) equ =>X+4=12=>X=12 – 4=8
(3) equ =>2X+Y=20=>2(8)+Y=20=>16+Y=20=>Y=20 – 16=4
(4) equ =>X+(2+2)*Y=?=>8+(4*4)=>8+16=>24