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# Ratio + Percentage

Author Message
Manager
Joined: 02 Sep 2008
Posts: 103

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14 Mar 2009, 17:38
Q11:
A certain company that sells only cars and trucks reported that revenues from car sales in
1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7
percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1
percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from
truck sales in 1996?
A. 1 : 2
B. 4 : 5
C. 1 : 1
D. 3 : 2
E. 5 : 3

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Manager
Joined: 02 Mar 2009
Posts: 129

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14 Mar 2009, 22:12
Car Revenue in 1996: x
Car Revenue in 1997: 0.89x

Truck rev in 1996: y
Truck rev in 1997: 1.07y

We want to find x/y

We know: 0.89x + 1.07y = 1.01[x +y]
Solving this would yield: 0.06y = 0.12x
Rearranging: x/y = 1/2

Hence A

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Re: Ratio + Percentage   [#permalink] 14 Mar 2009, 22:12
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# Ratio + Percentage

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