6 h - 75%
x h - 100%
6 = 0,75x / :0,75
x = 8
odp: 8 h
(myśle, że o to chodzi)
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6 h - 75%
x h - 100%
6 = 0,75x / :0,75
x = 8
odp: 8 h
(myśle, że o to chodzi)