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Lila bought a green poster that measured 36 inches by 24 inches and a red poster that measured 12 inches by 18 inches. If the posters cost $0.05 per square inch, how much did she spend?

Respuesta :

36 × 24 = 864 square inches. 864 sq in × $0.05 = $43.20. The green poster cost $43.20

12 × 18 = 216 square inches. 216 sq in × $0.05 = $10.80. The red poster cost $10.80

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