A northbound bus and a southbound bus are at the same stop at the same time. The northbound bus returns to the bus stop every 20 minutes. The southbound returns to the bus stop every 25 minutes. How long will it be before both buses are at the bus stop together?

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.