Answer:
8.8 pounds
Explanation:
To avoid paying extra fees ; carry-on bag should weigh ≤ 30 pounds
Weight of Lorries carry-on = 21.2 pound
Maximum Weight that can be added without going above the 30 pounds limit = w
The inequality reprentation :
21.2 + w ≤ 30
Subtract 21.2 from both sides ;
21.2 + w - 21.2 ≤ 30 - 21.2
w ≤ 8.8
Hence, Maximum Weight that can be added without going above the 30 pounds limit is 8.8 pounds.