Ms Kendrick and her daughter can stain the deck in 12 hours when working together. Last year Ms. Kendrick stained the deck by herself. The year before it took her daughter three times as long to stain it alone. How long did Ms. Kendrick and her
daughter take when painting alone

Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.