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100%*25/280 =2500/280 %=8 13/14 %≈8,93% ≈9%
100% *30/280 =3000/280 %=10 5/7 %≈10,71% ≈11%
100%*10/280 =1000/280 %=3 4/7 % ≈3,57% ≈4%
diagram w załączniku
a)
280 100%
35 x%
x= 35*100%/280
x=12.5%
b)
280 100%
25 x%
x=25*100/280
x=8.92% ok
c)
280 100%
30 x%
x=30*100%/280
x=10.71% ok
d)
280 100%
10 x%
x=10*100%/280
x=3.57% ok