A lifeguard is standing beside the lifeguard chair on a beach. The lifeguard is 76 inches tall and casts a shadow that is 48 inches long. The chair casts a shadow that is 72 inches long. How tall is the lifeguard chair?

At the county fair, animals are judged for the quality of their breeding and health. the animal pens are arranged in an array, with one animal in each pen. a barn can hold at most 10 rows of pens and at most 6 pens in each row, with room for people to walk around them. what different ways can the planners of the county fair arrange the pens for the horses and cows in the same barn?