zad.1
a) 37%= 0,37
b) 170%= 1,70
zad.2
a) 80%= 80/100= 8/10= 4/5
b) 36%= 36/100= 9/25
zad.3
a) 50% z 700 -----> 100% -- 700
50% --- x x= 50*700/100=350
b) 25% z 28 -------> 100% -- 28
25% --- x x= 25*28/100= 7
c) 10% z 9 ----------> 100% -- 9
10% --- x x= 10*9/100= 0,9
d) 4% z 140 --------> 100% -- 140
4% ------ x x= 4*140/100= 5,6