human
Aaron is gathering can lids to take to the recycling center. He uses 3 equal-sized boxes of canned tomatoes and adds the lids he gets to the 14 can lids he already has. He is now taking 53 can lids to the recycling center. How many cans lids did he get from each box?
assistant
How many can lids did Aaron have initially? ** Calculating the difference between the can lids Aaron has now and the amount that he had initially shows there were 53 – 14 = <<53-14=39>>39 can lids in the boxes of canned tomatoes.
How many can lids were in each box? ** As the boxes are the same size, splitting these can lids equally shows that there were 39 / 3 = <<39/3=13>>13 can lids in each box.
#### 13