One liter of grape juice costs  0.85, and a liter of apple juice - 0.65. Calculate the cost of 1 liter of drink made from 2 liters of grape juice and 3 liters of apple juice

To calculate the cost of 1 liter of the mixed drink, follow these steps:

1. **Determine the total cost of the grape juice**:
   \[
   \text{Cost of grape juice} = 2 \, \text{liters} \times 0.85 = 1.70
   \]

2. **Determine the total cost of the apple juice**:
   \[
   \text{Cost of apple juice} = 3 \, \text{liters} \times 0.65 = 1.95
   \]

3. **Calculate the total cost of the mixture**:
   \[
   \text{Total cost} = 1.70 + 1.95 = 3.65
   \]

4. **Calculate the total volume of the mixture**:
   \[
   \text{Total volume} = 2 \, \text{liters} + 3 \, \text{liters} = 5 \, \text{liters}
   \]

5. **Find the cost per liter of the mixed drink**:
   \[
   \text{Cost per liter} = \frac{3.65}{5} = 0.73
   \]

Thus, the cost of 1 liter of the drink is **0.73**.

Would you like more details on any step or have further questions?

Here are five related questions:
1. What would be the cost of the drink if only 1 liter of apple juice was used?
2. How does the cost per liter change if the price of grape juice increases by 10%?
3. If the mixture was made with equal parts grape and apple juice, what would be the cost per liter?
4. What is the percentage of grape juice in the mixture?
5. How much would 10 liters of this mixture cost?

**Tip:** When calculating weighted averages, always account for both the quantities and individual costs to find the average price.

One liter of grape juice costs 0.85, and a liter of apple juice - 0.65. Calculate the cost of 1 liter of drink made from 2 liters of grape juice and 3 liters of apple juice.

Calculate the cost of 1 liter of a drink made from 2 liters of grape juice and 3 liters of apple juice, using basic arithmetic and unit price concepts. This example teaches how to find the cost of a mixture and calculate the weighted average cost per liter. Ideal for students in Grades 5-7.

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