Talia uses 10 strawberries and 4 oranges to make 8 servings of fruit salad.

how many does Taila needs to make 12 servings.

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.