Calculate the energy contribution from each nutrient.

The total daily energy need is $2500 \text{ Kcal}$.
Energy from carbohydrates:

$$0.60 \times 2500 \text{ Kcal} = 1500 \text{ Kcal}$$

Energy from fat:

$$0.30 \times 2500 \text{ Kcal} = 750 \text{ Kcal}$$

Energy from protein:

$$0.10 \times 2500 \text{ Kcal} = 250 \text{ Kcal}$$

Standard energy values are approximately $4 \text{ Kcal/g}$ for carbohydrates, $9 \text{ Kcal/g}$ for fat, and $4 \text{ Kcal/g}$ for protein.
Quantity of carbohydrates:

$$\frac{1500 \text{ Kcal}}{4 \text{ Kcal/g}} = 375 \text{ g}$$

Quantity of fat:

$$\frac{750 \text{ Kcal}}{9 \text{ Kcal/g}} \approx 83.33 \text{ g}$$

Quantity of protein:

$$\frac{250 \text{ Kcal}}{4 \text{ Kcal/g}} = 62.5 \text{ g}$$

The quantities of each nutrient needed are:

• Carbohydrates: $\boxed{\text{375 g}}$
• Fat: $\boxed{\text{83.33 g}}$
• Protein: $\boxed{\text{62.5 g}}$