There are 180 doctors and nurses at a hospital. If the ratio of doctors to nurses is 2 to 3, how many nurses are at the hospital?  Answers.
A) 100
B) 104
C) 108
D) 112
E) 116

Rationale: "the number of nurses at the hospital is ( 3 / 5 ) * 180 = 108 . the answer is c ."
Answer: C