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0,04 × x = 5
x = 5 ÷ 0,04
x = 500 ÷ 4
x = 125
Odp. W tym bloku mieszka 125 osób.
x=100%
x=100% ×5 ÷4%
x=500÷4
x=125
odp. mieszka tak 125 osób.