Noah and his sister are making gift bags for a birthday party. Noah puts 3 pencil erasers in each bag. His sister puts x stickers in each bag. After filling 4 bags, they have used a total of 44 items.
Since Noah puts 3 pencil erasers in each bag and his sister puts x stickers in each bag, the total number of items in each bag is 3 + x.
After filling 4 bags, they have used a total of 44 items, so we can write the equation:
4(3 + x) = 44
Expand the equation:
12 + 4x = 44
Subtract 12 from both sides:
4x = 32
Divide by 4:
x = 8
Therefore, Noah's sister puts 8 stickers in each bag.