What will come in place of the question mark (?) in the following questions ?
`60=?%` of 400

Options

A. 6
B. 2
C. 20
D. 15

Answer

To solve the equation \( 60 = ?\% \) of \( 400 \), we can follow these steps:

### Step 1: Convert the percentage to a decimal
We know that \( ?\% \) can be expressed as \( \frac{?}{100} \). So we can rewrite the equation as:
\[ 60 = \frac{?}{100} \times 400 \]

### Step 2: Simplify the equation
We can simplify the right side of the equation:
\[ 60 = \frac{? \times 400}{100} \]
This simplifies to:
\[ 60 = ? \times 4 \]

### Step 3: Solve for the question mark (?)
To isolate the question mark, we divide both sides by \( 4 \):
\[ ? = \frac{60}{4} \]

### Step 4: Calculate the value
Now, we perform the division:
\[ ? = 15 \]

### Final Answer
Thus, the value that comes in place of the question mark (?) is:
\[ \boxed{15} \]

---