Alexander, who weighs 177lb , decides to climb Mt. Krumpett, which is 5380m high. For his food supply, he decides to take nutrition bars.

Alexander, who weighs 177lb , decides to climb Mt. Krumpett, which is 5380m high. For his food supply, he decides to take nutrition bars. The label on the bars states that each 100-g bar contains 10 g of fat, 40 g of protein, and 50 g of carbohydrates.One gram of fat contains 9 Calories, whereas each gram of protein and carbohydrates contains 4 Calories.Nutrition factsCalories per gram:Fat9Protein4Carbohydrates4Alexander wants to know exactly how many bars to pack in his backpack for the journey. To provide a margin of safety, he assumes that he will need as much energy for the return trip as for the uphill climb. How many bars should Alexander pack?

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