Thomas has 8 packets of milk. Each packet contains 2/5 liter of milk. After pouring all the milk into a container, he uses 1 4/5 liters of the milk to make a dessert. How much milk... Thomas has 8 packets of milk. Each packet contains 2/5 liter of milk. After pouring all the milk into a container, he uses 1 4/5 liters of the milk to make a dessert. How much milk does he have left?

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Understand the Problem

The question is asking how much milk Thomas has left after pouring all the milk from 8 packets and using a portion of it for dessert. We will calculate the total amount of milk from the packets and subtract the amount used for the dessert to find the remaining milk.

Answer

Thomas has \( \frac{7}{5} \) liters (or \( 1 \frac{2}{5} \) liters) of milk left.
Answer for screen readers

Thomas has ( \frac{7}{5} ) liters of milk left, which is equal to ( 1 \frac{2}{5} ) liters.

Steps to Solve

  1. Calculate Total Milk from Packets
    First, we need to find the total amount of milk from the 8 packets. Each packet contains ( \frac{2}{5} ) liters, so we multiply the amount per packet by the number of packets:
    $$ \text{Total Milk} = 8 \times \frac{2}{5} $$

  2. Multiply to Find Total Milk
    Now, we compute the total:
    $$ \text{Total Milk} = \frac{16}{5} \text{ liters} $$
    This fraction represents the total liters of milk Thomas has after pouring everything into the container.

  3. Convert Mixed Fraction for Dessert
    Next, we need to convert the portion of milk used for the dessert, which is ( 1 \frac{4}{5} ) liters, into an improper fraction for easier calculations:
    $$ 1 \frac{4}{5} = \frac{9}{5} $$

  4. Subtract the Milk Used for Dessert
    Now, subtract the amount used for the dessert from the total amount of milk:
    $$ \text{Remaining Milk} = \frac{16}{5} - \frac{9}{5} $$

  5. Perform the Subtraction
    Since the denominators are the same, we can directly subtract the numerators:
    $$ \text{Remaining Milk} = \frac{16 - 9}{5} = \frac{7}{5} $$

  6. Convert to Mixed Number (if necessary)
    Finally, we can convert ( \frac{7}{5} ) to a mixed number if desired:
    $$ \frac{7}{5} = 1 \frac{2}{5} $$

Thomas has ( \frac{7}{5} ) liters of milk left, which is equal to ( 1 \frac{2}{5} ) liters.

More Information

Thomas started with a total of ( \frac{16}{5} ) liters of milk and used ( \frac{9}{5} ) liters for dessert. The process of converting a mixed number to an improper fraction simplifies subtraction, making it easier to calculate the remaining amount.

Tips

  • Forgetting to convert mixed numbers to improper fractions before performing calculations can lead to errors.
  • Failing to handle the subtraction correctly when fractions have the same denominator.

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