Maria has $15 in her bank account. to encourage maria to save her money, her father promises to triple the amount in her bank account. unknowingly, maria's mother also promises to double the amount maria has in her bank account. finally, maria's uncle says he will quadruple the amount maria has. maria first asks her father to triple her bank account balance, and she deposits the money, tripling the value of her bank account. maria then asks her mother to double her current balance. she deposits this money, and finally asks her uncle to quadruple what she has. after she deposits her uncle's money, how many dollars does maria have in her bank account?