for 65 I think its $1.77 because 3 dozen is e.i and he only has 30 so no discount
for 66 its $67.95-$63.95 which is $4 and $4 times 3 for the 3 dresses is $12 saved
for 69 so start with the $2 then she spent 5 minutes after that on the phone so 15 cents times 5 is 75 cents so $2.75
