document.write( "Question 149431: In three years, Alex will be 3 times as old as Precy.
\n" ); document.write( "A year ago, Alex was 7 times as old as Precy. How old are they now? \n" ); document.write( "
Algebra.Com's Answer #109634 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
In three years, Alex will be 3 times as old as Precy.
\n" ); document.write( "A year ago, Alex was 7 times as old as Precy. How old are they now?
\n" ); document.write( ":
\n" ); document.write( "Let A and P = their present ages
\n" ); document.write( ":
\n" ); document.write( "Write an equation for each statement, simplify:
\n" ); document.write( ":
\n" ); document.write( "\"In three years, Alex will be 3 times as old as Precy.\"
\n" ); document.write( "A+3 = 3(P+3)
\n" ); document.write( "A + 3 = 3P + 9
\n" ); document.write( "A = 3P + 9 - 3
\n" ); document.write( "A = 3P + 6
\n" ); document.write( ":
\n" ); document.write( "\"A year ago, Alex was 7 times as old as Precy.\"
\n" ); document.write( "A-1 = 7(P-1)
\n" ); document.write( "A - 1 = 7P - 7
\n" ); document.write( "A = 7P - 7 + 1
\n" ); document.write( "A = 7p - 6
\n" ); document.write( ":
\n" ); document.write( " How old are they now?
\n" ); document.write( ":
\n" ); document.write( "Substitute (3P+6) for A in the above equation
\n" ); document.write( "3P + 6 = 7p - 6
\n" ); document.write( "6 + 6 = 7P - 3P
\n" ); document.write( "12 = 4P
\n" ); document.write( "P = \"12%2F4\"
\n" ); document.write( "P = 3 yrs old Precy's present age
\n" ); document.write( "and
\n" ); document.write( "A = 3(3)+ 6
\n" ); document.write( "A = 15 yrs old is Alex's present age
\n" ); document.write( ";
\n" ); document.write( ":
\n" ); document.write( "Check the solution in the statement:
\n" ); document.write( "\"A year ago, Alex was 7 times as old as Precy.\"
\n" ); document.write( "15 - 1 = 7(3-1) \n" ); document.write( "
\n" );