exam13

\documentclass[addpoints,12pt]{exam}
\usepackage{amsmath,amssymb} % digunakan untuk pengaturan formula matematika
\begin{document}
\begin{center}
\fbox{\fbox{\parbox{5.5in}{\centering
Answer the questions in the spaces provided on the
question sheets. If you run out of room for an answer,
continue on the back of the page.}}}
\end{center}
\vspace{0.1in}
\makebox[\textwidth]{Name and section:\enspace\hrulefill}
\vspace{0.2in}
\makebox[\textwidth]{Instructor’s name:\enspace\hrulefill}
\begin{questions}
\question[10]
Why is there air?
\vspace{3in}
\question
What if there were no air?
\begin{parts}
\part[5]
Describe the effect on the balloon industry.
\vspace{2in}
\part[5]
Describe the effect on the aircraft industry.
\vspace{2in}
\end{parts}
\newpage
\end{questions}
\end{document}