document.write( "Question 385160: Christiana and Marlena opened their first savings accounts on the same day. Christiana opened her account $50 and plans to deposit $10 every month. Marlena opened her account with $30 and plans to deposit $15 every month. After how mnay months will their two accounts have the same amount of money? What will that amount be? \n" ); document.write( "
Algebra.Com's Answer #272551 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Christiana opened her account $50 and plans to deposit $10 every month.
\n" ); document.write( " Marlena opened her account with $30 and plans to deposit $15 every month.
\n" ); document.write( " After how mnay months will their two accounts have the same amount of money?
\n" ); document.write( ":
\n" ); document.write( "Let m = no. of months
\n" ); document.write( ":
\n" ); document.write( "C = 10m + 50; Christiana's balance in m months
\n" ); document.write( "and
\n" ); document.write( "M = 15m + 30; Marlena's balance in m months
\n" ); document.write( "when are they equal: M = C
\n" ); document.write( "15m + 30 = 10m + 50
\n" ); document.write( "15m - 10m = 50 - 30
\n" ); document.write( "5m = 20
\n" ); document.write( "m = 20/5
\n" ); document.write( "m = 4 months, they will be equal
\n" ); document.write( ":
\n" ); document.write( " What will that amount be?
\n" ); document.write( "C = 10(4) + 50
\n" ); document.write( "C = $90
\n" ); document.write( "and
\n" ); document.write( "M = 15(4) + 30
\n" ); document.write( "M = $90 is the amt \n" ); document.write( "
\n" );