Cereal box says 1/2 cup provides 120 calories and 3 grams of fiber how many calories and grams of fiber in a 1/3 cup

1/2 cup = 120 calories & 3 g of fiber

1/2 cup x 2 = 1 cup

120 cal x 2 = 240 cal/3 (from denominator) = 80 cal

3g of fiber x 2 = 6g of fiber/3 = 2g of fiber

final answer: 80 calories and 2 grams of fiber