A barrel has 4L and 500 mL of acid. In how many containers, each of capacity 25 mL, can be filled?

Options

A. 175
B. 180
C. 200
D. 185

Answer

To solve the problem of how many containers of 25 mL can be filled with 4L and 500 mL of acid, follow these steps:

### Step 1: Convert the total volume of acid to milliliters.
- We know that 1 liter (L) is equal to 1000 milliliters (mL).
- Therefore, 4 liters can be converted to milliliters as follows:
\[ 4 \text{ L} = 4 \times 1000 \text{ mL} = 4000 \text{ mL} \]
- Now, add the additional 500 mL:
\[ \text{Total volume} = 4000 \text{ mL} + 500 \text{ mL} = 4500 \text{ mL} \]

### Step 2: Determine how many containers can be filled.
- Each container has a capacity of 25 mL. To find out how many containers can be filled, we divide the total volume of acid by the capacity of each container:
\[ \text{Number of containers} = \frac{4500 \text{ mL}}{25 \text{ mL}} \]

### Step 3: Perform the division.
- Now, calculate the division:
\[ \frac{4500}{25} = 180 \]

### Conclusion:
- Therefore, the total number of containers that can be filled is **180**.

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