Christiana and Marlena opened their first savings accounts on the same day. Christiana opened her account with $40 and plans to deposit $10 every month. Marlena opened her account with $30 and plans to deposit $15 every month. After how many months will their two accounts have the same amount of money? What will that amount be? The two accounts will have the same amount of money in ___ months. And, the amount will be $
(Solve for the blanks please help!)