AMC10 2006 B

AMC10 2006 B · Q9

AMC10 2006 B · Q9. It mainly tests Fractions, Mixture / concentration.

Francesca uses 100 grams of lemon juice, 100 grams of sugar, and 400 grams of water to make lemonade. There are 25 calories in 100 grams of lemon juice and 386 calories in 100 grams of sugar. Water contains no calories. How many calories are in 200 grams of her lemonade?

Francesca使用100克柠檬汁、100克糖和400克水制作柠檬水。100克柠檬汁含25卡路里，100克糖含386卡路里。水不含卡路里。她的柠檬水中200克含有多少卡路里？

(A) 129 129

(B) 137 137

(D) 223 223

(E) 411 411

Answer

Correct choice: (B)

正确答案：（B）

Solution

Francesca's 600 grams of lemonade contains $25 + 386 = 411$ calories, so 200 grams of her lemonade contains $411/3 = 137$ calories.

Francesca的600克柠檬水含有$25 + 386 = 411$卡路里，因此200克柠檬水含有$411/3 = 137$卡路里。

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