Revenues were recorded for Store A and Store B over a period of three months. In the first month, Store A's revenues were $40,000 higher than Store B's revenues. In the second month, Store A's revenues were $8,000 higher than Store B's revenues. If Store A's average (arithmetic mean) monthly revenue for the three months was $2,000 greater than Store B's average monthly revenue, then Store B's revenue in the third month was how much greater than Store A's revenue?
(A) $14,000
(B) $15,000
(C) $42,000
(D) $46,000
(E) $50,000
OA is C.
Source: GMAT Hacks
5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILS
Revenues: A and B
This topic has expert replies
GMAT/MBA Expert
-
Anurag@Gurome
- GMAT Instructor
- Posts: 3835
- Joined: Fri Apr 02, 2010 10:00 pm
- Location: Milpitas, CA
- Thanked: 1854 times
- Followed by:523 members
- GMAT Score:770
In 1st month, revenue of Store A = $40,000 + Store B's revenuesikaplan wrote:Revenues were recorded for Store A and Store B over a period of three months. In the first month, Store A's revenues were $40,000 higher than Store B's revenues. In the second month, Store A's revenues were $8,000 higher than Store B's revenues. If Store A's average (arithmetic mean) monthly revenue for the three months was $2,000 greater than Store B's average monthly revenue, then Store B's revenue in the third month was how much greater than Store A's revenue?
(A) $14,000
(B) $15,000
(C) $42,000
(D) $46,000
(E) $50,000
OA is C.
Source: GMAT Hacks
In 2nd month, revenue of Store A = $8,000 + Store B's revenues
Average revenue of Store A for 3 months = $2,000 + Store B's average monthly revenue
Let in the 3rd month, revenue of store A = X
Then, (40,000 + 8,000 + X)/3 = 2,000
40,000 + 8,000 + X = 6,000
X = -42,000, which implies that Store B's revenue in the third month was $42,000 greater than Store A's revenue.
The correct answer is C.
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)
Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)
Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
-
ronnie1985
- Legendary Member
- Posts: 626
- Joined: Fri Dec 23, 2011 2:50 am
- Location: Ahmedabad
- Thanked: 31 times
- Followed by:10 members
Month A B
1 x+40 x
2 y+8 y
3 z+t z
Avg B+2 B
B = (x+y+z)/3
A = B+2 = (x+y+z+48+t)/3 => (48+t)/3 = 2=> t = -42
Since all figures are in thousands' and -42 is in A's side. B's revenue was 42000 more than A.
1 x+40 x
2 y+8 y
3 z+t z
Avg B+2 B
B = (x+y+z)/3
A = B+2 = (x+y+z+48+t)/3 => (48+t)/3 = 2=> t = -42
Since all figures are in thousands' and -42 is in A's side. B's revenue was 42000 more than A.
Follow your passion, Success as perceived by others shall follow you
