A high school senior takes a survey of the entire senior class for a project. She's interested in seeing the distribution of what her peers decide to pursue in college. She came up with the following data:

The rest of the students stated an interest in Linguistics. How many students in total were surveyed?

A chemist mixes a solution out of a bottle which states on the label with some pure water. What is the strength of the solution in the bottle, as a percentage?

At high elevations, the ability of red blood cells to hold oxygen is decreased. At a particular elevation, the red blood cells' ability to hold oxygen is multiplied by . What percentage of the normal amount does this represent?

Which of the following is equivalent to ?

Sally sees a jacket on sale that's . The store is having a storewide discount. What is the price of the jacket after the discount is applied?