A contractor is considering using three stockpiles for a Superpave mix design that requires evaluation of three different blend percentages. Determine the blended specific gravity for the three blends shown in Table P$5\mathrm{.}42.$

TABLE P$5\mathrm{.}42$

$\backslash$table$[[$Material$,G_{sb},$Stockpile $1,$Stockpile $2,$Stockpile $3],[$Crushed limestone$,2\mathrm{.}702,45\%,55\%,50\%$