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21%= 0,21 = 21/100
6%= 0,06 = 6/100 = 3/50
112%= 1,12 = 112/100 = 28/25
Zamień na ułamki zwykłe nieskracalne:
4%= 0,04 = 4/100 = 2/50 = 1/25
65%= 0,65 = 65/100 = 13/20
140%= 1,4 = 140/100 = 35/25 =7/5
Oblicz:
40% liczby 600= 0,4*600=240
84%liczby 120=100,8
150% liczby 860=1290