Graduate Record Examinations (GRE) Quizzes Mathematics GRE Problem Solving Quiz

Question:
A machine puts c caps on bottles in m minutes. How many hours will it take to put caps on b bottles?

Option A):
b/60cm
Option B):
60b/cm
Option C):
60bm/c
Option D):
bc/60m
Option E):
bm/60c

Correct Answer is Option E):
bm/60c