Answer:
$28.80 / 4 = $7.20 (cost per necklace)
$7.20 - $3.40 = $3.80 (cost of each pendant)
Check:
4 * 3.40 = 13.60
4 * 3.80 = 15.20
13.60 + 15.20 = 28.80
Explanation:
6.0m questions
7.8m answers