I got the ans that 531875
pv ratio formula I.e contribution÷sales or sales- variable cost ÷sales
here sale not given so take as X
X-425500/X=20%
0.2X=X-425500
0.8X=425500
X=531875
contribution is 531875-425500=106375
if u cross check the ans i.e
106373÷531875=20%