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Question
Energy content of different foods are as follows:
| Food | Energy Content per kg. |
| Wheat | 3.2 Joules |
| Rice | 5.3 Joules |
| Potatoes (Cooked) | 3.7 Joules |
| Milk | 3.0 Joules |
Which food provides the least energy and which provides the maximum?
Express the least energy as a fraction of the maximum energy.
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Solution
In the given table, we see that the minimum value is 3.0 J and the maximum value is 5.3 J.
∴ Least energy provide by food = 3.0 J i.e. milk
Food which provide the maximum energy = 5.3 J i.e. rice
∴ Required fraction = `"Least energy"/"Maximum energy"`
= `3.0/5.3`
= `30/53`
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