Jeśli n=0,8b,to:
A.b=0,2n
B.b=1,25n
C.b=0,8n
D.b=0,25n
proszę o dokładne wytłumaczenie!
Jeśli n=0,8b/:4/5
5/4n=b
b=1 1/4n
to:b=1,25n
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Jeśli n=0,8b/:4/5
5/4n=b
b=1 1/4n
to:b=1,25n