Question 12: A construction company is negotiating on a construction project with a four- month duration. The projected monthly costs (budget) and revenues as shown in the table below. Use this table to answer the following questions, Budget Costs Bill to Owner Month Materials (S) In-house Labor ($) Subcontracts ($) (S) 33,700 25,300 35,600 101,200 54,100 42,400 125,200 337,200 69,600 77,900 93,600 258,000 17,200 17,900 105,700 150,700 174,600 163,500 360,100 847,100 Total a) Determine the gross profit margin of this construction project, based on the budget shown in the table. b) If the SPI at the end of the third month is known, i.e. 1.03, and the ACWP at the end of the third month for the project is $541,700, determine the corresponding CPI. Page 13