Solve for x
x\leq 15
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240x+1600-80x\leq 4000
Use the distributive property to multiply 80 by 20-x.
160x+1600\leq 4000
Combine 240x and -80x to get 160x.
160x\leq 4000-1600
Subtract 1600 from both sides.
160x\leq 2400
Subtract 1600 from 4000 to get 2400.
x\leq \frac{2400}{160}
Divide both sides by 160. Since 160 is positive, the inequality direction remains the same.
x\leq 15
Divide 2400 by 160 to get 15.
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