[Tex/LaTex] How to order 3 images horizontally (two with sub-figure and the third one is one figure)

Question

I put three figures in a row. One figure is independent one and with a caption underneath; the other two figures are sub-figures. Please see the picture below.

I tried to combine minipage with subfigure, but it didn't work. Can you please help me?

Answer 1

\documentclass{article}
\usepackage{graphicx}
\usepackage{subcaption}
\begin{document}
\begin{figure}
 \begin{minipage}[b]{.4\textwidth}
  \centering
  \includegraphics[width=1.5in]{example-image-a}
  \caption{This is first figure}
  \end{minipage}%
  \hfill
  \begin{minipage}[b]{.5\textwidth}
  \subcaptionbox{}{\includegraphics[width = 1in]{example-image-b}}
  \subcaptionbox{}{\includegraphics[width = 1in]{example-image}}  
  \caption{caption}
  \end{minipage} 
\end{figure}
\end{document}

And an option using subfig:

\documentclass{article}
\usepackage{graphicx}
\usepackage{subfig}

\begin{document}

\begin{figure}
\begin{minipage}[b]{.4\linewidth}
\centering
\includegraphics[width=4cm]{example-image-a}
\caption{A figure}
\end{minipage}%
\begin{minipage}[b]{.6\linewidth}
\centering
\subfloat[subfigure]{\includegraphics[width=3cm]{example-image-b}}\quad
\subfloat[subfigure]{\includegraphics[width=3cm]{example-image-c}}
\caption{Another figure}
\end{minipage}
\end{figure}

\end{document}