To find the ratio of the strawberry-flavored candy to the total number of candies, we need to first determine the total number of candies. Niko has:
- 10 strawberry candies
- 13 butterscotch candies
- 7 root beer candies
Total number of candies = 10 (strawberry) + 13 (butterscotch) + 7 (root beer) = 30 candies.
Now, to form the ratio of strawberry candies to the total number of candies:
Ratio = Number of strawberry candies : Total number of candies
Ratio = 10 : 30
Thus, the correct answer is:
10:30 (ratio of 10 to 30).