Answer
$\text{less than or equal to } 1,040 \text{ pounds}$
Work Step by Step
Let $x$ be the weight of the luggage and cargo of the airplane
The conditions of the problem translate to
\begin{array}{l}\require{cancel}
160(6)+x\le2000
.\end{array}
Using the properties of inequality, then
\begin{array}{l}\require{cancel}
960+x\le2000
\\\\
x\le2000-960
\\\\
x\le1040
.\end{array}
Hence, the weight of the luggage and cargo should be $
\text{less than or equal to } 1,040 \text{ pounds}
.$
