Find `(3)/(4)` of 7 km

Answer

To find \(\frac{3}{4}\) of 7 km, we can follow these steps:

### Step 1: Multiply the fraction by the whole number
We start by multiplying \(\frac{3}{4}\) by 7 km.

\[ \frac{3}{4} \times 7 = \frac{3 \times 7}{4} \]

### Step 2: Calculate the multiplication in the numerator
Now, we calculate \(3 \times 7\):

\[ 3 \times 7 = 21 \]

So, we have:

\[ \frac{3 \times 7}{4} = \frac{21}{4} \text{ km} \]

### Step 3: Write the answer
Thus, \(\frac{3}{4}\) of 7 km is:

\[ \frac{21}{4} \text{ km} \]

### Step 4: Convert to a mixed fraction (optional)
If we want to express \(\frac{21}{4}\) as a mixed fraction, we divide 21 by 4:

\[ 21 \div 4 = 5 \quad \text{(whole number)} \]
\[ 21 - (4 \times 5) = 1 \quad \text{(remainder)} \]

So, we can write:

\[ \frac{21}{4} = 5 \frac{1}{4} \text{ km} \]

### Final Answer
Therefore, \(\frac{3}{4}\) of 7 km is:

\[ \frac{21}{4} \text{ km} \quad \text{or} \quad 5 \frac{1}{4} \text{ km} \]

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