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Register now and save up to $200 Available with Beat the GMAT members only code • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code Difficult Math Question #46 - Arithmetic This topic has 5 member replies 800guy Master | Next Rank: 500 Posts Joined 27 Jun 2006 Posted: 354 messages Followed by: 5 members Upvotes: 11 Difficult Math Question #46 - Arithmetic Fri Nov 03, 2006 1:12 pm For a certain company, operating costs and commissions totaled$550 million in 1990, representing an increase of 10 percent from the previous year. The sum of operating costs and commissions for both years was
(A) $1,000 million (B)$1,050 million
(C) $1,100 million (D)$1,150 million
(E) $1,155 million Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums! limits660 Senior | Next Rank: 100 Posts Joined 12 Jul 2006 Posted: 57 messages Followed by: 2 members Top Reply Sun Nov 05, 2006 5:35 pm wow im an idiot _________________ - Jeff Sacco www.jeffsacco.ca 800guy Master | Next Rank: 500 Posts Joined 27 Jun 2006 Posted: 354 messages Followed by: 5 members Upvotes: 11 Top Reply Mon Nov 06, 2006 10:47 am OA: 1998 =$500 M
1999 = $550 M Sum =$ 1050 M
Ans:B

limits660 Senior | Next Rank: 100 Posts
Joined
12 Jul 2006
Posted:
57 messages
Followed by:
2 members
Sun Nov 05, 2006 5:35 pm
wow

im an idiot

_________________
-
Jeff Sacco
www.jeffsacco.ca

800guy Master | Next Rank: 500 Posts
Joined
27 Jun 2006
Posted:
354 messages
Followed by:
5 members
11
Mon Nov 06, 2006 10:47 am
OA:

1998 = $500 M 1999 =$550 M

Sum = \$ 1050 M
Ans:B

logik1911 Newbie | Next Rank: 10 Posts
Joined
28 Jun 2006
Posted:
3 messages
Followed by:
2 members
1
Sun Nov 05, 2006 2:36 pm
the quickest way to solve this problem is to try a conversion factor

550 represents 110%

so...

550 x 10% = 500 500+550 = 1050
110%

note: 550 being on top of 110% represents 550/110%

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