Solve for y
y=3000
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0.8y=400+2000
Add 2000 to both sides.
0.8y=2400
Add 400 and 2000 to get 2400.
y=\frac{2400}{0.8}
Divide both sides by 0.8.
y=\frac{24000}{8}
Expand \frac{2400}{0.8} by multiplying both numerator and the denominator by 10.
y=3000
Divide 24000 by 8 to get 3000.
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