There is a box of colored marbles on the counter top. There are 24 blue, 16 green, and 56 red. Write the ratio of green marbles to red marbles. Don't forget to put your answer in simplest form.

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