Fifteen Accounting Majors Had an Average Grade of 90 on a fiNance

Fifteen accounting majors had an average grade of 90 on a finance exam. Seven marketing majors
Averaged 85, while ten finance majors averaged 93 on the same exam. What is the weighted mean
For the 32 students taking the exam?

A) 89.84
B) 89.33
C) 89.48
D) Impossible to determine without more information
E) $89.88