Mr Richmond has a picture of his son that is 0.05 meter wide.
Width of the original picture = 0.05 meter
He made a copy of the picture that was 1/10 the size of the original picture
Width of copy picture = 1/10 of width of original picture
[tex]\begin{gathered} \text{Width of copy picture=}\frac{1}{10}\times0.05\text{ meter} \\ \text{Width of copy picture=}0.005\text{ meter} \end{gathered}[/tex]Answer: width of the copy picture is 0.005 meter