Question 1001658
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Sue had 3L and used 1.4L. That leaves her with (3L-1.4L=1.6L) 1.6L.
She gave half of 1.6L to the cat. (Half of 1.6L=0.8L) 
1.6L-((1/2)(1.6L))=1.6L-0.8L=0.8L
ANSWER: She had 0.8L remaining.