At Company X, senior sales representatives visit the home office once every 18 days, and junior sales representatives visit the home office once every 12 days. The number of visits that a junior sales representative makes in a 2-year period is approximately what percent greater than the number of visits that a senior representative makes in the same period?
Choose one:
A) 10%  B) 25%  C) 33%  D) 50%  E) 67%
Each 36-day period, senior representatives visit the home office 2 times while junior representatives visit 3 times, thus 50% more.   The answer is 50%.
<result>D</result>
At Company X, senior sales representatives visit the home office once every 18 days, and junior sales representatives visit the home office once every 12 days. The number of visits that a junior sales representative makes in a 2-year period is approximately what percent greater than the number of visits that a senior representative makes in the same period?