Charmaine made 4 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for all 4 necklaces was $19.60. If the beads cost a total of $12.80, how much did each pendant cost?

For a problem like this, you'll want to break it down ...

Total cost = $19.60.

Cost of beads = $12.80.

Cost of pendant = ?

We know that there are 4 necklaces. Each necklace has one pendant, so we have 5 pendants total. Therefore, your solution should look something like this ...

Total cost = Cost of beads - cost of pendant

$19.60 = 12.80 - 4x < - x is the variable representing the price for a single pendant.

6.80 = 4x < - Subtract 12.80 from both sides.

x = 1.70 < - Divide both sides by 4, and find your final answer.

x = 1.70; therfore, each pendant costs $1.70.