Y1 = 725
Y2 = 579
Y3 = 696
Y4 = ?
Y1 + Y2 + Y3 = 100%
725 + 579 + 696 = 2000
10% of 2000 = 2000 x .10 = 200
2% of 2000 = 2000 x .02 = 40
112% = 2000 + 200 + 40 = 2240
The answer is Y4 = 2240.
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