Bunuel wrote:
A toy company sells only toy cars and toy bikes. The revenue from toy car sales in 2002 was down 11 percent from 2001 and the revenue from toy bikes sales in 2002 were up 7 percent from 2001. If total revenues from toy car sales and toy bikes sales in 2002 were up 1 percent from 2001, what is the ratio of revenue from toy car sales in 2001 to revenue from toy bikes sales in 2001?
(A) 1:2
(B) 2:3
(C) 4:5
(D) 3:2
(E) 7:5
Let C denote the revenue from toy car sales in 2001 and B denote the revenue from toy bike sales in 2001.
We can create the equation:
0.89C + 1.07B = 1.01(C + B)
0.89C + 1.07B = 1.01C + 1.01B
0.06B = 0.12C
0.06/0.12 = C/B
1/2 = C/B
Answer: A
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