The frequency table represents the job status of a number of high school students

To get the 2nd table, you divide each element of the 1st row by 40 and where is the total, you divide by 150:

Looking for a Job Not looking for a job Total

Current 12/40 = 0.30 28/40 = 0.7 40/150 = 0.27

Not current 38/110 = 0.345 72/110 = 0.654 110/150 = 0.73

Total 50/150=0.33 100/150 = 0.666 1