A company paid overtimewages or hired temporary help during 9 months ofthe year. Overtime wages were paid during 7 months,and temporary help was hired during 4 months. At theend of the year, an auditor examines the accountingrecords and randomly selects one month to check thepayroll. What is the probability that the auditor willselect a month in which the company paid overtimewages and hired temporary help?Express your answer as a fraction in simplest form.