Răspuns :
3/10 amplificam cu 10 si obtinem: 30/100 = 30%
7/20 * 5/5= 35/100= 35 %
11/25 *4/4= 44/100 =44%
7/4 * 25/25= 175/100= 175 %
7/20 * 5/5= 35/100= 35 %
11/25 *4/4= 44/100 =44%
7/4 * 25/25= 175/100= 175 %