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Question
Solve: `7/10 + 2/5 + 3/2`
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Solution
`7/10 + 2/5 + 3/2`
`= 7/10 + (2 xx 2)/(5 xx 2) + (3 xx 5)/(2 xx 5)`
`= (7 + 4 + 15)/10`
`= 26/10`
`= 13/5`
`= 2 3/5`
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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.
Write the fraction representing the shaded portion.
