d : p = 1 : 2 1 d = 2 p = k d = k p = 2 k d + p = 6 k + 2 k = 6 3 k = 6 k = 3 6 = 2 d = 2 p = 2 ∗ 2 p = 4
In the cage, there are 2 doves and 4 parrots. This is derived from the ratio of doves to parrots being 1 to 2, with a total of 6 birds. Therefore, the number of parrots is 4.
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