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2014-09-11T17:39:09+03:00
10m..........0,85m
25m............x

x=25*0,85/10

x=21,25/10

x=2,125m
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2014-09-11T17:39:43+03:00
10martisoare......................0,85m
25martisoare.......................x
x= \frac{25*0,85}{10} = \frac{85}{40} = \frac{17}{8} =2,125
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