Solve for y
y\leq 160
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30y+20000+20y\leq 28000
Use the distributive property to multiply 20 by 1000+y.
50y+20000\leq 28000
Combine 30y and 20y to get 50y.
50y\leq 28000-20000
Subtract 20000 from both sides.
50y\leq 8000
Subtract 20000 from 28000 to get 8000.
y\leq \frac{8000}{50}
Divide both sides by 50. Since 50 is positive, the inequality direction remains the same.
y\leq 160
Divide 8000 by 50 to get 160.
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