diff --git a/slides/chapter-03.en.md b/slides/chapter-03.en.md
index cb80147..76489f7 100644
--- a/slides/chapter-03.en.md
+++ b/slides/chapter-03.en.md
@@ -197,7 +197,7 @@ Some characters do things in LaTeX:
 Solution: prefix with ‘`\`’:
 
 ``` {.lang-tex .hljs}
-50\% is the half.
+50\% is one half.
 ```
 
 Does not work for ‘`\\`’, we will see a solution for this later.
diff --git a/svg/chapter-03/reserved-characters-crop.pdf b/svg/chapter-03/reserved-characters-crop.pdf
deleted file mode 100644
index cc4c2dc..0000000
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index d857ae9..04a90d5 100644
--- a/svg/chapter-03/reserved-characters-crop.svg
+++ b/svg/chapter-03/reserved-characters-crop.svg
@@ -1,5 +1,5 @@
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diff --git a/svg/chapter-03/reserved-characters-orig.svg b/svg/chapter-03/reserved-characters-orig.svg
index 54b3227..0aeb6a1 100644
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diff --git a/svg/chapter-03/reserved-characters.tex b/svg/chapter-03/reserved-characters.tex
index 0158787..c8b47f3 100644
--- a/svg/chapter-03/reserved-characters.tex
+++ b/svg/chapter-03/reserved-characters.tex
@@ -7,7 +7,7 @@
 \begin{document}
 \thispagestyle{empty}
 \noindent
-50% is the half.
+50% is one half.
 \\\\
-50\% is the half.
+50\% is one half.
 \end{document}