Last year, the five employees of Company X took an average of 16 vacation days each. What was the average number of vacation days taken by the same employees this year?
(1) Three employees had a 50% increase in their number of vacation days, and two employees had a 50% decrease.
(2) Three employees had 10 more vacation days each, and two employees had 5 fewer vacation days each.
Avg Vacation
This topic has expert replies
GMAT/MBA Expert
- Ian Stewart
- GMAT Instructor
- Posts: 2621
- Joined: Mon Jun 02, 2008 3:17 am
- Location: Montreal
- Thanked: 1090 times
- Followed by:355 members
- GMAT Score:780
Answer ought to be B. From the question, last year the five people averaged 16 days vacation --> i.e. they took 80 vacation days in total. Three people take 10 more vacation days this year, while two people take 5 fewer days --> 80 + 3*10 - 2*5 = 100 vacation days taken in total this year. Average is thus 20 vacation days.
The other statement is not sufficient without some information about the distribution of the vacation days.
The other statement is not sufficient without some information about the distribution of the vacation days.