Tyler and Jen are comparing mortgages. The mortgage is for $97,000. If they choose 30 years at 6%, their monthly payment will be $581.56 with a total payback of $209,361.60. If they choose 15 years at 5.5%, their monthly payment will be $792.57 with a total payback of $142,662.60.

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?