The number of calories in Swiss cheese varies directly with the weight of the cheese. There are about 200 calories in 50 grams of Swiss cheese. Willie ate 70 grams of Swiss cheese. About how many calories did he eat?

280 calories

Step-by-step explanation:

let's make a proportion: 50/70 = 200/x

cross multiply: 50 * x = 70 * 200

multiply: 50x = 14000

divide each side by 50: x = 280

answer is 280 calories

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