What was the question for this implicit rationale, and corresponding answer?
3 * (16 * 5) = 240 square feet. 2 * (8 * 4) = 64 square feet. 240 + 64 = 304 square feet. The gardens have a total of 304 square feet.
The answer: 304
The question: Mancino is tending 3 gardens that each measure 16 feet by 5 feet. His sister, Marquita, is tilling the soil for two gardens that each measure 8 feet by 4 feet. How many square feet combined are in all their gardens?