Monique's Florals produced a special Mother's Day arrangement that included eight roses. The standard and actual costs of the roses used in each arrangement follow:

$\backslash$table$[[,$Standard,Actual$],[$Average number of roses per arrangement,$7\mathrm{.}30,7\mathrm{.}50],[$Price per rose,$$$$0\mathrm{.}60,$$$0\mathrm{.}58$