The shares are 6, 5 and 4 units, so $120 is split into 6 + 5 + 4 = 15 units.

Jane888888Wendy88888Lily8888$120

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

  1. Total → 6 + 5 + 4 = 15 units → $120
  2. 1 unit → $120 ÷ 15 = $8
  3. Lily → 4 units = 4 × $8 = $32

Lily’s share was $32.

Check: Jane $48 + Wendy $40 + Lily $32 = $120. ✓