Who know the answer do this question

Can someone me with this problem . show your work .

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.