A bottle of water costs 23of the cost of a bottle of juice. If the cost of the juice bottle is AED 15, what is the cost of the bottle of water

Out of the 150 students at a summer camp, 72 signed up for canoeing. there were 23 students who signed up for trekking, and 13 of those students also signed up for canoeing. use a two-way table to organize the information and answer the following question: approximately what percentage of students signed up for neither canoeing nor trekking?