jaki procent spośród 7 dziewczyn stanowi jedna?
7 dziewczyn - 100%
1 dziewczyna - x % ?
7 - 100%
1 - x%
x=(1*100%):7≈14,3%
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1---x
x= 1 * 100 / 7 = 14,3 %
7 - 100%
1 - x%
x=(1*100%):7≈14,3%