Total cars - 9000; red cars- 4500; blue cars- 4500;
(1) Blue coupes = 3*red sedans
Not enough information; hence, Insufficient.
(2) blue coupes = 2*blue sedans;
Total blue cars - 4500; hence, blue coupes = 3000;
But it doesn't give any information about red sedans; hence, Insufficient.
(1) & (2) together,
Blue coupes = 3000 = 3* red sedans;
Therefore, red sedans = 1000;
Now total red cars 4500; hence, red coupes = 4500 - 1000 = 3500;
So, total coupes sold = 3000 + 3500 = 6500; Sufficient.
Answer C.
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