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ratio..

by vaivish » Thu Aug 07, 2008 11:09 am
A certain company that sells only cars and trucks reported that revenues from car sales in 2002 were 22% of the total revenues. If total revenues from car sales in 2003 were up 200 percent from 2002, and the total revenues from truck sales in 2003 remained unchanged, what percent of the total revenues of the company was from the car sales?
(A) 44%
(B) 46%
(C) 48%
(D) 55%
(E) 66%


Oa is B
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Re: ratio..

by Stuart@KaplanGMAT » Thu Aug 07, 2008 11:32 am
vaivish wrote:A certain company that sells only cars and trucks reported that revenues from car sales in 2002 were 22% of the total revenues. If total revenues from car sales in 2003 were up 200 percent from 2002, and the total revenues from truck sales in 2003 remained unchanged, what percent of the total revenues of the company was from the car sales?
(A) 44%
(B) 46%
(C) 48%
(D) 55%
(E) 66%

Let's pick numbers to make life easier.

For 2002, let's let car sales = $22 and truck sales = $78.

For 2003, car sales were "up 200%", so for 2003 car sales = $66 and truck sales remain unchanged at $78.

We want the % of revenue from car sales. % = part/whole * 100%, so we have:

66/(66+78) = 66/144 = 11/24

Using long division, we get around 45.8%, which rounds to 46%: choose (B).
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