\[Private{\text{ }}saving{\text{ }} = {\text{ }}\left( {Y{\text{ }} - {\text{ }}T} \right){\text{ }} - {\text{ }}C{\text{ }}\]
\[Public{\text{ }}saving{\text{ }} = {\text{ }}T{\text{ }} - {\text{ }}G{\text{ }}\]
\[National{\text{ }}saving{\text{ }} = {\text{ }}Y{\text{ }} - {\text{ }}C{\text{ }} - {\text{ }}G\]