



 
Hi Deeshon, The scale factor relates to lengths so "He reduces the original by a scale factor of 1/3" means that the lengths of the sided are reduced by $\large \frac13$. Thus the lengths of the sides of the smaller poster will be $1  \large \frac13 \normalsize = \large \frac23$ the lengths of the sides of the original poster. Penny  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 