Brian irons 2/9 of his his shirt in 3 3/5 Brian irons at a constant rate at this rate hou much of his shirt is ironed each minute

He irons 5/81 of his shirt in 1 minute.

Since he irons 2/9 of his shirt in 3 3/5 minutes, we divide 2/9 by 3 3/5 to find the portion done in 1 minute:

2/9 : 3 3/5

Convert the mixed number to an improper fraction:

2/9:18/5

Flip the second fraction and multiply:

2/9*5/18

= 10/162

Simplifying, we have 5/81.