To find the ratio of the strawberry-flavored candy to the total number of candies, we first need to calculate the total number of candies in the jar.
Total candies = Number of strawberry candies + Number of butterscotch candies + Number of root beer candies
Total candies = 10 + 13 + 7 = 30
Now, the ratio of the strawberry-flavored candies to the total number of candies is:
Ratio = Number of strawberry candies : Total number of candies
Ratio = 10 : 30
Therefore, the correct response is 10:30 (ratio of 10 to 30).