Mrs. McMercy was helping to send out letters to each of the school families. On Monday, she addressed and mailed 324 letters. How many letters must she do Tuesday in order to send one to each of the 500 families? Mrs. McMercy was helping to send out letters to each of the school families . On Monday , she addressed and mailed 324 letters . How many letters must she do Tuesday in order to send one to each of the 500 families ?
