Carol and Jordan draw rectangles of equal area. If Carol's rectangle measures 15 inches by 20 inches and Jordan's rectangle is 6 inches long, how wide is Jordan's rectangle, in inches?	Pick.
A) 20 B) 30 C) 40 D) 50 E) 60

Rationale: "area of first rectangle is 15 * 20 = 300 hence area of second would be 6 x = 300 x x = 50 answer is d"
Answer: D