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It takes Greg and Nikki a total of 40 minutes to paint a room if they work together. If Greg works alone, he takes

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It takes Greg and Nikki a total of 40 minutes to paint a room if they work together. If Greg works alone, he takes 18 minutes longer to paint he room than Nikki takes if she works alone. When x represents the number of minutes it takes Nikki to paint the room working alone, the situation is represented by this equation: 1 +18 1 40 Which value is a solution of the rational equation that must be discarded because of the context? OA x=0 OB. x=-10 OC x=-18 OD. x=-72

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