Toby is making toast and adding peanut butter to it. He wants to make sure he has 500 calories for breakfast. A piece of bread has 100 calories. A serving of peanut butter has 200 calories. If he has one piece of bread, how many servings of peanut butter should he add?
He needs 400 calories worth of peanut butter because 500 - 100 = <<500-100=400>>400
He needs 2 servings of peanut butter because 400 / 200 = <<400/200=2>>2
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