7/5 = x/100
x = 100*7 / 5
x = 700/5
x = 140
7/5 = 140%
3/4 = x/100
x = 100*3/4
x = 300/4
x = 75
3/4 = 75%
7/25 = x/100
x = 100*7/25
x = 700/25
x = 28
7/25 = 28%
11/10 = x/100
x = 100*11/10
x = 1100/10
x = 110
11/10 = 110%
3/50 = x/100
x = 100*3/50
x = 300/50
x = 6
3/50 = 6%
6/0.4 = x/100
x = 100*6/0.4
x = 600/0.4
x = 1500
6/0.4 = 1500%
2) 20/100*100 = 20 (100 cu 100 se simplifica)
40/100*12.5 = 40*12.5/100 = 500/100 = 5
38/100*1900 = 38*19 = 722
42/100 * 27/7 = 1134/700 = 162/100 = 81/50
0.6/100 * 3/9 = 1.8/900
120/100 * 80 = 120*80/100 = 9600/100 = 96