2008 PSLE MATH QUESTION

To raise fund for their school, Wendy and Alice cut out red paper hearts for sale. They could cut 3 red hearts from each piece of paper. For every 19 pieces of paper used, 2 red hearts were damaged. The red hearts were sold at 5 ¢ each. Wendy and Alice collected $38.50 in total from the sale of all their red hearts. How many pieces of paper were used to cut the red hearts?