QuestionRatios. Proportons, and Measweimetus Writing ratios for real-world situations
There are 6 red marbles and 9 blue marbles in a bag. (a) What is the ratio of red marbles to all marbles in the bag? $\square$ (b) What is the ratio of all marbles in the bag to blue marbles? $\square$

Studdy Solution
Determine the ratio of all marbles to blue marbles.
The ratio of all marbles to blue marbles is: $$\frac{15 \text{ (total marbles)}}{9 \text{ (blue marbles)}}$$
Simplify the ratio: $$\frac{15}{9} = \frac{5}{3}$$
The ratio of all marbles to blue marbles is $\frac{5}{3}$.
The solutions are: (a) The ratio of red marbles to all marbles is $\frac{2}{5}$. (b) The ratio of all marbles to blue marbles is $\frac{5}{3}$.