Bella asked 40 students to name their favorite food. 10 students said their favorite food was pizza. What percent of the students Bella surveyed said
their favorite food was pizza?

Problem number 26 of the rhind papyrus says: find a quantity such that when it is added to of itself the result is a 15. the modern day equation that models this problem is x + x = 15. what is the solution to the equation? x = 10 x = 12 x = 15 x = 30