Solve for y
y=300
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y=120+0.6y
Add 20 and 100 to get 120.
y-0.6y=120
Subtract 0.6y from both sides.
0.4y=120
Combine y and -0.6y to get 0.4y.
y=\frac{120}{0.4}
Divide both sides by 0.4.
y=\frac{1200}{4}
Expand \frac{120}{0.4} by multiplying both numerator and the denominator by 10.
y=300
Divide 1200 by 4 to get 300.
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