New PMP Question & Answers with explanation

A project that should have been 80 percent complete by now is only 75 percent complete. The total project budget is US$100,000 and the actual cost of work performed (ACWP) is US $72,000. What can be determined from this information?
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Six months into project execution, the project manager determines that the cost performance index (CPI) is. 9 and a trend analysis shows that the CPI has a downward trend. What should the project manager do next?
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A project manager is leading a project that is running low on cash and for which project cost performance is taken very seriously. The approved project baseline schedule is 100 days, and the baseline budget is US$100,000. After 10 days, the project has spent US$20,000 and earned US$15,000 of work. What is the cost performance index (CPI)?
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A US$3 million project is being executed. To date, the planned cost is US$630,000, the actual cost (AC) is US$650,000, and the earned value (EV) is US$540,000. What is the project's current status?
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A project manager submits a project review report showing that the project has completed 50 percent of its activities, has a schedule performance index (SPI) of 1, and a cost performance index (CPI) of <1. What should the project manager do next to successfully complete the project?
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