Answer: Hi your question is incomplete below is the missing part
Candidate Interviewscore Job Knowledge Test Score 
 Frank. 14 89 
 Sally 21 77 
 Lilly 20 75 
 Peter 17 82 
 Jordyn 19 80
Answer : Select Sally because she has the highest Test score 
Explanation:
For Franck :
Interview score / 25 = 14 / 25 = 0.56
Job knowledge score = 89 /100 = 0.89
Test score = 0.56 + 0.89 = 1.45
For Sally 
interview score = 21 / 25 = 0.84
Jon knowledge = 77 / 100 = 0.77
Test score = 0.84 + 0.77 = 1.62 ( Highest test score ) 
Repeat the same procedure for Lilly , Peter and Jordyn
Lily test score = 1.55
Peter test score = 1.5
Jordyn test score = 1.56
conclusion : select Sally as a Finalist