Answer:
when a is negative, the symbol will be reversed
Pineapple juice : orange juice : lime juice = 2:7:3
So there is 2x of pineapple juice, 7x of orange juice and 3x of lime juice.

She used 100 ml of pineapple juice.
Answer:
32 US Fluid Ounces
More Details would be nice though if i'm incorrect.
One is 1/2 and 2/4 because when you simplify it is 1/2 I think that's the answer but I know that 2/4 in simplify form is 1/2
What u have to do is divide.
200/4 = 50
50 is the answer
hope it helps! ~ Cupcakemonsters