72. first multiply 1 1/2 by 2 and you get 3 for 6 dozen, then add 1/2 and you get 3 and 1/2 for 7 dozen.
73. 3+2 is 5, and 2 is 66% of 3, so it is a 66% increase
74. 495 X .07 is 34.65, so she gets $34.65 dollars
75. multiply 7/100 by 40 to get 280/4000, so 280 would be defective
I can not read the last 4 questions
