The total amount they should collect altogether for the three sales is:
$ 611.1
Cost of 1 dozen of appetizer is: $ 33.95
Hence, amount that should be collected from customer A is: 4×33.95= $ 135.8
Hence, amount that should be collected from customer B is: 6×33.95= $ 203.7
Hence, amount that should be collected from customer C is: 8×33.95= $ 271.6
Total amount that should be collected from the three sales is:
$( 135.8+203.7+271.6 )=$ 611.1