Answers

2014-11-22T13:46:34+08:00
Assuming 4,750 is the container with water.
Y=weight of container
X=weight of oil
2X=weight of water

Find Y

(a) x+y=3250
(b) 2x+y=4750

Use substitution method
equation (a)
x+y=3250
x=3250-y

Plug Equation A into B

2(3250-y)+y=4750
6500-2y+y=4750
6500-y=4750
-y=-1750
y=1750

The empty container weighs 1750 grams.
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