document.write( "Question 1010364: PC Solutions sells standard keyboards for $84 and extended keyboards for $105. Last week the store sold three times as many standard keyboards as extended. If total sales were $4998, how many of each type were sold? \n" ); document.write( "

Algebra.Com's Answer #625796 by addingup(3677) $\"\"$ $\"About$

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Standard: S
\n" ); document.write( "Extended: E
\n" ); document.write( "(you can call them x and y if that's what your teacher wants)
\n" ); document.write( "-----------------------------------------------------
\n" ); document.write( "S= 84
\n" ); document.write( "E= 105
\n" ); document.write( "84S + 105E= 4998
\n" ); document.write( "-----------------------------------------------------
\n" ); document.write( "S= 3E In the equation above, let's use this value for E:
\n" ); document.write( "84(3E) + 105E= 4998
\n" ); document.write( "252E + 105E= 4998
\n" ); document.write( "357E= 4998
\n" ); document.write( "E= 14 He sold 14 Extended and:
\n" ); document.write( "14*3= 42 Standard
\n" ); document.write( "---------------------------------------------------------------
\n" ); document.write( "Check:
\n" ); document.write( "14*105= 1470
\n" ); document.write( "42*84= 3528
\n" ); document.write( "_ _ _ _-----
\n" ); document.write( "Total...4998 We have the right answer \n" ); document.write( "

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