Subtracting 8 km 73m from 15km 160m, we get `"____________"`.

Options

A. 7.078km
B. 0.087km
C. 23.233km
D. 7.087km

Answer

To solve the problem of subtracting 8 km 73 m from 15 km 160 m, we can follow these steps:

### Step 1: Convert the measurements into the same unit
We need to convert kilometers into meters to make the subtraction easier. Since 1 km = 1000 m, we can convert both distances into meters.

- **15 km 160 m** = \( 15 \times 1000 + 160 = 15000 + 160 = 15160 \) m
- **8 km 73 m** = \( 8 \times 1000 + 73 = 8000 + 73 = 8073 \) m

### Step 2: Perform the subtraction
Now that we have both distances in meters, we can subtract them:

\[ 15160 \text{ m} - 8073 \text{ m} = 7087 \text{ m} \]

### Step 3: Convert the result back to kilometers and meters
Now we need to convert the result back into kilometers and meters.

- To convert 7087 m into kilometers and meters:
- **Kilometers**: \( \frac{7087}{1000} = 7 \) km (the whole number part)
- **Meters**: \( 7087 - (7 \times 1000) = 7087 - 7000 = 87 \) m

### Final Answer
Thus, subtracting 8 km 73 m from 15 km 160 m gives us:

\[ \text{7 km 87 m} \]

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