Answer:
Talia uses 10 strawberries and 4 oranges to make 8 servings of fruit salad.
8 servings need 10 strawberries
1 serving needs 1 serving 10/8 = 1.25 strawberries
12 servings need 12*1.25 = 15 strawberries
We do the same for oranges
8 servings need 4 oranges
1 serving need oranges
12 servings need 12*0.5 = 6 oranges
So, Talia needs 15 strawberries and 6 oranges to make 12 servings.