document.write( "Question 1127755: A girl scout troop sold cookies. If the girls sold 5 more boxes the second week than they did the first, and if they doubled the sales of the second week for the third week to sell a total of 431 boxes of cookies, how many did they sell each week? \n" ); document.write( "
Algebra.Com's Answer #744318 by ankor@dixie-net.com(22740)\"\" \"About 
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A girl scout troop sold cookies.
\n" ); document.write( " If the girls sold 5 more boxes the second week than they did the first,
\n" ); document.write( " and if they doubled the sales of the second week for the third week to sell a total of 431 boxes of cookies,
\n" ); document.write( " how many did they sell each week?
\n" ); document.write( ":
\n" ); document.write( "Let x = no. sold the 1st week
\n" ); document.write( "\" the girls sold 5 more boxes the second week\"
\n" ); document.write( "(x+5) = no. sold the 2nd week
\n" ); document.write( "\" if they doubled the sales of the second week for the third week\"
\n" ); document.write( "2(x+5) = no. sold the 3rd week
\n" ); document.write( " to sell a total of 431 boxes of cookies,?
\n" ); document.write( "x + (x+5) + 2(x+5) = 431
\n" ); document.write( "x + x + 5 + 2x + 10 = 431
\n" ); document.write( "4x + 15 = 431
\n" ); document.write( "4x = 431 - 15
\n" ); document.write( "4x = 416
\n" ); document.write( "x = 416/4
\n" ); document.write( "x = 104 sold the 1st week
\n" ); document.write( "then
\n" ); document.write( "104 + 5 = 109 sold the 2nd week
\n" ); document.write( "and
\n" ); document.write( "2(109) = 218 sold the 3rd week
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check: 104 + 109 + 218 = 431
\n" ); document.write( "
\n" );