Answer: 3 2/3
In order to solve this we must turn our fractions into whole numbers.
2 1/5 as a whole number is 2.20
3/5 as a whole number is .6
Next we must divide our two whole numbers into one another.
2.20/.6 is 3.66666667
666666667 as a fraction is 2/3.
This means that 3/5 can fit into 2 1/5 3 whole times and 2/3 of a whole. This means you will need 3 whole boxes and 2/3 of a box.
I hope this helps & Good Luck <3 !!!