help with C

A time study was conducted on a job that contains four elements. The observed times and performance ratings for six cycles are shown in the following table. Click here for the Excel Data Fle Hint: the performance ratings given in this question and the Excel spreadsheet link are in percentages. It is necessary to convert them to their decimal equivalents when solving the problem. a. Determine the average cycle time for each element. (Round your answers to 3 decimal places.) Answer is complete and correct. b. Find the normal time for each element. (Round your answers to 3 decimal places.) Answer is complete and correct. c. Assuming an allowance factor of 17 percent of job time, compute the standard time for this job. (Round your answers to 3 decimal places.) Answer is complete but not entirely correct