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12-11-2017
Mathematics

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mathmate mathmate

12-11-2017

Using algebra,
Let x=original liquid in each.
Then by pouring 120 mL from A to B, we have
4(x-120)=x+120
Distribute
4x-480=x+120
4x-x=120+480
3x=600
so x=200

Volume of liquid left in A = 200-120= 80 mL

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