42 received an A
so 40-42 = 38 did not
the fraction would be 38/80, divide both numbers by 2
38/80 reduces to 19/40 did not receive an A
The old mean was 51 now the mean is 42.33... (round that to 42) 51 - 42 = 9
The person above me is right. It’s A , you have to add
The length of the picture would be 10 inches. If the frame needs to be 34, that means 7+7 for the width and 10+10 for the length.
