An average person eats carbohydrates equivalent to 0.350 kg of glucose and 0.200 kg of fats every day. The person needs about 10000 kJ per day. If the body consumes carbohydrates preferentially, how much will his weight increase per year assuming that only 50% of the excess fats are excreted. Give that the heat of combustion of glucose is 2900 kJ and combustion of fats produces energy equivalent to `39000 kJ kg^(-1)` ?

Explanation

To solve the problem step by step, we need to calculate the energy obtained from glucose and fats, determine the excess energy consumed, and then calculate the weight increase based on the excess energy.

### Step 1: Calculate the energy obtained from glucose
The energy obtained from glucose can be calculated using the formula:
\[ \text{Energy from glucose} = \text{mass of glucose} \times \text{heat of combustion of glucose} \]
Given:
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