Răspuns :
4zile.............49ha
xzile............122,5ha
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x=[tex] \frac{4*122,5}{49} =4*2,5=10[/tex]zile
x=10 zile
xzile............122,5ha
_____________________
x=[tex] \frac{4*122,5}{49} =4*2,5=10[/tex]zile
x=10 zile
4/x=49/122,5
⇒x=4·122,5/49
⇒x=490/49
⇒x=10[zile-tractorul va ara 122,5ha];
⇒x=4·122,5/49
⇒x=490/49
⇒x=10[zile-tractorul va ara 122,5ha];