Answer:
c ≤ 330
Explanation:
Given that:
Greatest weight = 23000 kg
Weight per crate = 60kg
Weight of other shipment already loaded = 3200kg
Total Number of 60kg crates, c that can be loaded
((Weight per crate * number of crates) + weight of other loaded shipment) ≤ greatest weight
((60 * c) + 3200 ≤ 23000
60c ≤ 23000 - 3200
60c ≤ 19800
c ≤ 19800 / 60
c ≤ 330