Ms. Sandy bought a package of pens. Out of every 10 pens, 6 are black. If there are 40 pens in the pack, what fraction of the pens in the pack are black? What percent of the pens in the pack are black?

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.