Mr. Tan packed 508 tarts into large and small boxes to sell. He filled each large box with 20 tarts and each small box with 12 tarts. All the boxes were full and there was no left over. What was the least number of boxes used by Mr. Tan ?
Mr. Tan packed 508 tarts into large and small boxes to sell. He filled each large box with 20 tarts and each small box with 12 tarts. All the boxes were full and there was no left over. What was the least number of boxes used by Mr. Tan ?
