Herman likes to feed the birds in December, January and February. He feeds them 1/2 cup in the morning and 1/2 cup in the afternoon. How many cups of food will he need for all three months? Let's answer step by step:
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December has 31 days, January has 31 days and February has 28 days for a total of 31 + 31 + 28 = 90 days. He feeds them 1 / 2 cup in the morning and 1 / 2 cup in the afternoon for a total of 1 / 2 + 1 / 2 = 1 cup per day. If he feeds them 1 cup per day for 90 days then he will need 1 * 90 = 90 cups of birdseed. The answer: 90.
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