write an example of a part to whole ratio.

Sure! An example of a part-to-whole ratio is the ratio of the number of red marbles to the total number of marbles in a jar. Let's say there are 10 red marbles and 30 marbles in total.

To express this as a part-to-whole ratio, you would write it as 10:30 or simply 10/30. This ratio tells us that for every 10 red marbles, there are 30 marbles in total. It represents the relationship between the specific part (red marbles) and the whole (total marbles).