A unit has 3.38 pounds of 5.56mm ammunition residue. If a single round has a brass weight of 0.0135 pounds, how many total rounds of residue are being turned in?

To determine the total number of rounds of ammunition residue being turned in, you need to divide the total weight of the residue by the weight of a single round. In this case, the unit has 3.38 pounds of residue, and each round of 5.56mm ammunition weighs 0.0135 pounds.

The calculation is as follows:

1. Convert the total residue weight into rounds: Total rounds = Total weight of residue / Weight of a single round Total rounds = 3.38 pounds / 0.0135 pounds per round

2. Performing the division: Total rounds = 250.37037...

This result rounds down to 250 rounds when considering whole rounds, as you cannot have a fraction of a round of ammunition.

Therefore, the correct answer indicates that there are 250 total rounds of residue being turned in, corroborating with option B. This approach emphasizes the importance of understanding how to calculate the total using provided measurements and reinforces the relationship between weight and quantity in ammunition handling procedures.