Solve for a
a\leq 48
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20a\leq 4800-80a
Use the distributive property to multiply 80 by 60-a.
20a+80a\leq 4800
Add 80a to both sides.
100a\leq 4800
Combine 20a and 80a to get 100a.
a\leq \frac{4800}{100}
Divide both sides by 100. Since 100 is positive, the inequality direction remains the same.
a\leq 48
Divide 4800 by 100 to get 48.
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