document.write( "Question 125803: Kevin is three times as old as Bob. Three years ago the sum of their ages was 22yr. How old is each now? \n" ); document.write( "
Algebra.Com's Answer #92184 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Write an equation for each statement:
\n" ); document.write( ":
\n" ); document.write( "\"Kevin is three times as old as Bob.\"
\n" ); document.write( " k = 3b
\n" ); document.write( ":
\n" ); document.write( "Three years ago, their ages;
\n" ); document.write( "(k-3) and (b-3), right?
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\n" ); document.write( "\"Three years ago the sum of their ages was 22yr.\"
\n" ); document.write( "(k-3) + (b-3) = 22
\n" ); document.write( ":
\n" ); document.write( "k - 3 + b - 3 = 22
\n" ); document.write( ":
\n" ); document.write( "k + b - 6 = 22
\n" ); document.write( ":
\n" ); document.write( "k + b = 22 + 6
\n" ); document.write( ":
\n" ); document.write( "k + b = 28
\n" ); document.write( ":
\n" ); document.write( "How old is each now?
\n" ); document.write( ":
\n" ); document.write( "Substitute 3b for k, find b
\n" ); document.write( "3b + b = 28
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\n" ); document.write( "4b = 28
\n" ); document.write( "b = \"28%2F4\"
\n" ); document.write( "b = 7 yrs old is Bob
\n" ); document.write( "then
\n" ); document.write( "3(7) = 21 yrs old is Kevin
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\n" ); document.write( ":
\n" ); document.write( "Check our solution using the statement:
\n" ); document.write( "\"Three years ago the sum of their ages was 22yr. \"
\n" ); document.write( "(21-3) + (7-3) =
\n" ); document.write( "18 + 4 = 22; confirms our solution
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\n" ); document.write( "Not that hard, do you think? \n" ); document.write( "
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