Subject: mathqa
Question: the average ( arithmetic mean ) of 16 students first quiz scores in a difficult english class is 62.5 . when one student dropped the class , the average of the remaining scores increased to 65.0 . what is the quiz score of the student who dropped the class ?
Option: 
A: b ) 25
B: c ) 40
C: e ) 70
D: a ) 10
Answer: A