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23% z 450 = 23/100 * 450 = 1035/10 = 103,5
32 % z 540 = 32/100 * 540 = 1728/10 = 172,8
zad 2
13% x = 36
13/100 x = 36 *100
13x = 3600 :13
x = 276 i 12/13
16% x = 540
16/100 x = 540 *100
16x = 54000 :16
x = 3375
x/100 * k = n
x/100 * 380 = 90 *100
380x = 9000 /380
x = 23 i 13/19 %
x/100 * k = n
x/100 * 460 = 80 *100
460x = 8000 /460
x = 17 i 9/23 %