14. Three carpenters worked in a house. One worked for 3.25 days, the second worked for 4.5 days and the third for 3.75 days. What is their average number of working days? What are the operations to be used? A. Subtraction and Multiplication C. Addition and Division B. Addition and Multiplication D. Multiplication and Division 15. There are 18 girls and 17 boys who will equally share the expenses for a bus trip that costs P 4,042.50. How much will each pay? A. P 141.50 B. P 135.50 C. P 125.50 DP 115.50