So 1/2 of 3/4 is 3/8 which is equal to 6 cookies ( or 3/8 of a packet has 6 cookies) So if we say a packet of cookies = X and we know 8/8 of a packet of cookies = 1 full packet of cookies ( 8/8 of a packet or 1 full packet has X cookies ) Then 3/8 divided by 8/8 = 6/X 3/8 = 6/X X = 6 divided by 3/8 X = 16 So there should be 16 cookies in a full packet