Answer:
x ≤ 221
Explanation:
we want x (number of 100kg crates) + 5400 do be less than or equal to the maximum the container can hold (27500).
100 x + 5400 ≤ 27500
100 x ≤ 27500 - 5400
100 x ≤ 22100
if crate is 100kg, then we can have 22100/100 = 221 crates. so x ≤ 221.