Alexandria and Monica went camping. They spent 15% of their time swimming, 25% of their time hiking, 20& skim boarding, and the rest beach combing. what percent of their time did they spend beach combing.
The way to solve this is quite simple, their entire day equals 100% so you add up all the percentages you have 15+25+20 which gets you 60% and 100-60=40 so it should be 40%
