jawab........................

• 6,5 kodi = 65/10 × 20 => 130 lembar
=> 130 + 2 = 132 lembar

• 2,5 kodi = 25/10 × 20 = 50 lembar
=> 50 + 5 = 55 lembar

==> 132 - 55 = 77 lembar

Maaf kalau salah...