Mohammad is the project manager of a project to build 2 labour houses each month and completed after 12 months. Each house plan to cost SAR10000. 20 labour houses have been built after 9 months and CPI is 0.85106 a) What is the actual cost of the project right now? b) What is the project's estimate at completion? c) How much more money will it take to complete the project? d) How is the project performing?