the perimeter of rectangular x is 240 , length of rectangular x is 10

the perimeter of rectangular x is 240 , length of rectangular x is 10 m more than rectangular y , the width of rectangular x is 10 meter less than rectangular y . if rectangular y is a square find area of rectangular x
A. 3000
B. 3200
C. 3500
D. 4000
E. 6400