Answer:
30 bags
Explanation:
The weight of the 10-lb bags in the crate is ...
6 · 10 lb = 60 lb
The remaining capacity is 180 lb -60 lb = 120 lb. If that capacity is filled using 5-lb sand bags, the number of them will be ...
(120 lb)/(5 lb/bag) = 24 bags
The total number of bags in the crate is 6 +24 = 30 bags when filled to capacity.