If 8 painters can paint 18 rooms in 9 days, then how many rooms can 4 painters paint in 12 days?
12 rooms
Using \(\frac{M_1 D_1}{W_1} = \frac{M_2 D_2}{W_2}\): \(\frac{8 \times 9}{18} = \frac{4 \times 12}{W_2}\).
\(4 = \frac{48}{W_2}\), so W2 = 12.
Hence, the answer is 12 rooms.
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