Deanna uses only fruit juice and sparkling water to make
 punch for a school dance. She uses 6 1/2 liters of fruit
 juice. She uses 0.6 as much sparkling water as fruit
 juice.
 How much fruit punch does she make? 
 A : 3.9
 B : 7.1
 C: 9.4
 D 10.4 
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 May Allah bless you