An Investment Savings account offered by a trust company pays a rate of 0.25% on the first $1000 of daily closing balance, 0.5% on the portion of the balance between $1000 and $3000, and 0.75% on any balance in excess of $3000. What interest will be paid for the month of April if the opening balance was $2439, $950 was deposited on April 10, and $500 was with-drawn on April 23?