Answer:
56 nails
Step-by-step explanation:
let's start with finding how many 2-inch nails he bought.
if there are 577 nails total, and 297 of them are 1-inch, then the remainder is the amount of 2-inch nails.
577 - 297 = 280
since there were 5 boxes, containing 280 nails total, then:
280/5 = 56 nails per box
hope this helped!