Dairon needs 20 pieces of string3/8 inch in length. he cut 4 7/8 inch piece of string into pieces that are 3/8 of an inch long each. how many more pieces of string does he need?

You're gonna need to post the table

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)

The answer would be 27 because assuming that each package has 1 bar of soap and 1 tube of toothpaste, after 27 packages they would run out of toothpaste