document.write( "Question 773087: hi please try to solve this problem for me\r
\n" ); document.write( "\n" ); document.write( "twelve years ago, gabriel was four times as old as grant. today, grant is eight years older than twice grant's age now. how old is gabriel now?\r
\n" ); document.write( "\n" ); document.write( "thanks so much
\n" ); document.write( "

Algebra.Com's Answer #471295 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Let \"+a+\" = Gabriel's age now
\n" ); document.write( "Let \"+b+\" = Grant's age now
\n" ); document.write( "\"+a+-+12+\" = Gabriel's age 12 yrs ago
\n" ); document.write( "\"+b+-+12+\" = Grant's age 12 yrs ago
\n" ); document.write( "--------------------------------
\n" ); document.write( "(1) \"+a+-+12+=+4%2A%28+b+-+12+%29+\"
\n" ); document.write( "(2) \"+a+=+2b+%2B+8+\"
\n" ); document.write( "-----------------
\n" ); document.write( "Note that you mistyped:
\n" ); document.write( "\"GRANT is eight years older than twice GRANT's age now\"
\n" ); document.write( "It should be:
\n" ); document.write( "\"Gabriel is eight years older than twice grant's age now\"
\n" ); document.write( "------------------
\n" ); document.write( "(1) \"+a+-+12+=+4b+-48+\"
\n" ); document.write( "(1) \"+a+-+4b+=+-36+\"
\n" ); document.write( "and
\n" ); document.write( "(2) \"+a+-+2b+=+8+\"
\n" ); document.write( "-----------------
\n" ); document.write( "Subtract (1) from (2)
\n" ); document.write( "(2) \"+a+-+2b+=+8+\"
\n" ); document.write( "(1) \"+-a+%2B+4b+=+36+\"
\n" ); document.write( "\"+2b+=+44+\"
\n" ); document.write( "\"+b+=+22+\"
\n" ); document.write( "and, since
\n" ); document.write( "(2) \"+a+-+2b+=+8+\"
\n" ); document.write( "(2) \"+a+-+2%2A22+=+8+\"
\n" ); document.write( "(2) \"+a+=+44+%2B+8+\"
\n" ); document.write( "(2) \"+a+=+52+\"
\n" ); document.write( "Gabriel is 52 now
\n" ); document.write( "check:
\n" ); document.write( "(1) \"+a+-+12+=+4%2A%28+b+-+12+%29+\"
\n" ); document.write( "(1) \"+52+-+12+=+4%2A%28+22+-+12+%29+\"
\n" ); document.write( "(1) \"+40+=+4%2A10+\"
\n" ); document.write( "(1) \"+40+=+40+\"
\n" ); document.write( "Ok
\n" ); document.write( "(2) \"+a+=+2b+%2B+8+\"
\n" ); document.write( "(2) \"+52+=+2%2A22+%2B+8+\"
\n" ); document.write( "(2) \"+52+=+44+%2B+8+\"
\n" ); document.write( "(2) \"+52+=+52+\"
\n" ); document.write( "OK
\n" ); document.write( "
\n" );