Lucy made 2 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for both necklaces was 13.80 . If the beads cost for 3.50 each necklace, how much did each pendant cost?
Let p be the cost of each pendant.
Since there are two necklaces, we can subtract 2(3.50) from 13.80 (assuming that 3.50 is the cost of all of the beads per necklace) - which gives us 6.80.
Since there are two pendants, we divide 6.80 by 2 which gives us 3.40 as the cost for each pendant.
Hope this helped!