There are 11 books on a shelf. 3 of these books are new ? what is the ratio of used book and new book?

On an airplane there are two seats on the left side and three seats on the right side there are 90 seats o the right side of the plane

Shania's test scores in 8 subjects were 88, 91, 85, 74, 69, 72, 80, and 87. shania found the middle number of her scores. which type of measure did she find?

What is another way to express 36 +32