A rancher has 100 meters of fencing to enclose two adjacent rectangular corrals. The rancher wants the enclosed area to be 350 meters. What dimensions should the rancher use to obtain this area.

Note: I was given 4x + 3y=100 as a formula below the picture of the two adjacent rectangles.

(Please see the attachment.)

Note: I was given 4x + 3y=100 as a formula below the picture of the two adjacent rectangles.

(Please see the attachment.)