In a fruit salad,12 strawberries are used for every 5 peaches. Flora uses 85 of these fruits altogether to make a large fruit salad. How many strawberries does she use?

12/17 = x/85

Cross multiply and solve for x.

To solve this problem, we can use the concept of ratios.

First, let's find the ratio of strawberries to peaches in the fruit salad. The ratio is given as 12 strawberries to 5 peaches.

Next, we can set up a proportion to find the number of strawberries based on the total number of fruits used. We have 12 strawberries for every 5 peaches, so we can set up the following equation:

12 strawberries / 5 peaches = x strawberries / 85 fruits

Cross multiplying, we get:
12 * 85 = 5 * x

Simplifying the equation:
1020 = 5x

To find x (the number of strawberries), we can divide both sides of the equation by 5:
1020 / 5 = x
204 = x

Therefore, Flora used 204 strawberries for her fruit salad.