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actofcreation
7.2 boxes

72% of 300 is 216. Knowing that it took 30 minutes to unload 216, we can now divide 216 by 30 to find how many boxes were, on average, delivered each minute! This gets us an answer of 7.2 boxes per minute, hope I helped!
72% of 300
300 × 72 ÷ 100 = 216 (downloaded boxes)

300:100=X:72
X=216

216÷ 30 minuti= 7,2 downloaded box in 1 minute