What is this plant
I was given this plant but have no idea what it is. There are three individual plants in the pot. One of the plants has developed a pattern of brown spots on one of the leaves. The other two are starting to develop browning around the edge of the leaves. Can someone help answer what is this plant, how to best take care of it and how to combat the browning? Sorry, I know that is a lot but I'm afraid it is only going to get worse if I don't figure out what the plant needs.
Thanks very much!