Determine the bulk$-$specific gravity of an aggregate whose apparent specific gravity is $2\mathrm{.}690$ and absorption is $1\mathrm{.}5\%.$

Combine the following aggregates in the right proportion to produce a blend with the given target gradation:

$\backslash$table$[[$Sieve Size,$\backslash$table$[[$CA$7\%],[$Passing$]],\backslash$table$[[$Washed Sand$],[\%$ Passing$]],\backslash$table$[[$Dry Sand$],[\%$ Passing$]],\backslash$table$[[\%$ Passing$],[$Target$]]],[19\mathrm{.}00,100,100,100,100\mathrm{.}0],[12\mathrm{.}50,98\mathrm{.}8,100,100,100\mathrm{.}0],[9\mathrm{.}50,62\mathrm{.}1,100,100,93\mathrm{.}0],[4\mathrm{.}75,2\mathrm{.}1,98\mathrm{.}1,100,62\mathrm{.}0],[2\mathrm{.}36,0,81,99,45\mathrm{.}0],[1\mathrm{.}18,0,69\mathrm{.}9,80\mathrm{.}7,35\mathrm{.}0],[0\mathrm{.}60,0,50\mathrm{.}6,59\mathrm{.}9,25\mathrm{.}0],[0\mathrm{.}30,0,20\mathrm{.}7,40,15\mathrm{.}0],[0\mathrm{.}150,0,5\mathrm{.}1,24\mathrm{.}2,9\mathrm{.}0],[0\mathrm{.}075,0,1\mathrm{.}9,17\mathrm{.}2,4\mathrm{.}0]]$