In the trapezoid above, BC is parallel to AD, angle A is 45 degrees and the length of line segment CD is 20. If the

In the trapezoid above, BC is parallel to AD, angle A is 45 degrees and the length of line segment CD is 20. If the height of the trapezoid is 10, then which of the following is the value of x+y?

A) 180

B) 255

C) 270

D) 285

E) 300

OA D

Source: EMPOWERgmat

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