Question
The combustion of glucose releases energy. The ratio of grams of glucose combusted to kilocalories of energy released is 12.0 to 45.0. How many grams of glucose must be combusted to provide 85.5 kilocalories of energy?
- 5.7
- 9.9
- 22.8
- 320.6
The correct answer is: 22.8
Ratio of grams of glucose combusted to kilocalories of energy released is 12:45
To get 85.5 kilocalories.
12:45 = x: 85.5
45x=85.5 
12
x = 22.8
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