PROBLEM 1: CALCULATE SCHEDULE VARIANCE FROM EARNED VALUE CALCULATIONS FROM A 4 MONTH PERIOD.PLANNED VALUE (PV): 38EARNED VALUE (EV): 30CALCULATE SCHEDULE PERFORMANCE INDEX:CALCULATE ESTIMATED TIME TO COMPLETION:PROBLEM 2: CALCULATE COST VARIANCE FROM EARNED VALUE CALCUATIONS WHERE PV = 38.ACTUAL COST OF WORK PERFORMED (AC): $40,000EARNED VALUE: 30CALCULATE COST PERFORMANCE INDEX:CALCULATE ESTIMATED COST TO COMPLETION:Show your complete work with formulas and equation (calculations). Without complete and very step calculations and substitution of showing formulas and calculations, your assignment would be considered zero.