: In a small library, there are 5 nonfiction books for every 9 fiction books. There are 130 nonfiction books. a. How many fiction books are there? Use paper to draw a model to support your answer.

Answer 1

Equal ratios: method,,,,,

9/5 = ?/130

the ratio is multiplied by 130 / 5 = 26.

?= 9 * 26 = 234

Cross multiplication: 9 * 130 = 5 * ?

9 * 130/5 = ?

1170/ 5 = ?

234 = ?