Odpowiedź :
9+7+4=20
Anna 9/20=45/100=45%
Barbara 7/20=35/100=35%
Cecylia 4/20=20/100=20%
Anna 9/20=45/100=45%
Barbara 7/20=35/100=35%
Cecylia 4/20=20/100=20%
9, 7, 4 = 20
9/20 = 4,5/ 10 = 45%
7/20 = 3,5/10 = 35%
4/20 = 2/10 = 20 %
9/20 = 4,5/ 10 = 45%
7/20 = 3,5/10 = 35%
4/20 = 2/10 = 20 %