其它
David went to watch $Spider Man$ at the cinema on June $25$\textsuperscript{th}. The movie started at $6 : 32$ P.M. and finished at $7 : 54$ P.M.. On the same day, Mary needed to go abroad by plane. The plane took off at $11 : 40$ P.M., and the time she spent on plane was $2$ hours and $11$ minutes longer than that David spent at the cinema. When would Mary get off the plane? 
Overseas Competition->Knowledge Point->Combinatorics->Time Problem->Time Calculation
From $6 : 32$ P.M. to $7 : 54$ P.M., it lasted $1$ hour and $22$ minutes.  The time Mary spent on plane: $1$ hour and $22$ minutes $+$ $2$ hours and $11$ minutes $=$ $3$ hours and $33$ minutes.  Thus, Mary would get off the plane at $3 : 13$ A.M. on June 26\textsuperscript{th}. 