Split the 28 folks into 7 equal units. Six units are female, so 1 unit is male.

28 folks4444444males = 1 unit

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

  1. 7 units → 28
  2. 1 unit → 28 ÷ 7 = 4
  3. Males = 1 unit → 4

There are 4 males.

Check: females = 6 × 4 = 24; 24 + 4 = 28. ✓