Profitability ratios

The following selected data were taken from the financial statements of Vidahill Inc. for December $31,20$Y$7,20$Y$6,$ and $20$Y$5$:

$\backslash$table$[[,\backslash$table$[[$December $31],[20$Y$7]],\backslash$table$[[$December $31],[20$Y$6]],\backslash$table$[[$December $31],[20$Y$5]]],[$Total assets,$$310,000,$$$279,000,$$$248,000$