The ratio table below describes the relationship between grapes and blueberries in a fruit salad.

Fruit Salad
Grapes
(cups)
Blueberries
(cups)
2
1
4
2
20
10
24
12

Mandie is making 15 cups of fruit salad. What ratio of grapes to blueberries should she use?
6:9
8:7
10:5
12:3
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