p = 20.0 cm, f = -12.0 cm
1/p + 1/q = 1/f
1/20 + 1/q = 1/-12
1/q = -1/12 - 1/20 = -32/240
q = -240/32 = -7.5 cm. (Image is upstream and virtual)

Now find the magnification:
m = -q/p = -(-7.5)/20 = 0.375
i.e., Image is demagnified and erect as in the figure.

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