The 3 items together cost 3 × the average. The $60 average and $49 bracelet are given; the $180 total is worked out. Take out the two bracelets to leave the necklace.

$49$49?total = 3 × $60 = $1802 braceletsnecklace

Plain numbers are given; italic underlined numbers are worked out.

  1. Total of 3 items → 3 × $60 = $180
  2. 2 bracelets → 2 × $49 = $98
  3. Necklace → $180 − $98 = $82

The necklace cost $82.

Check: ($82 + $49 + $49) ÷ 3 = $180 ÷ 3 = $60. ✓