O ile procent liczba a jest większa od liczby b jeśli :
a) a=34 i b=20
b) a=3,888 i b=2,16
c) a= 4 i 1/2 b=3 i 3/4
d) a=9 i 3/5 b=7,2 ?
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a)34-20=14
b)2.888-2,16=0.728
c)4,5-3,75=0.75
d)9,6-7,2=2,4