Question

If a child has a mental age of 12 years and a chronological age of 10 years, then what will be the IQ of the child?

• A. 83.33
• B. 100
• C. 120
• D. 80

Hint:

To calculate IQ, divide the mental age by the chronological age and multiply by 100.

Answer 1

The Correct Option is C

Step 1: Understanding the IQ formula.
The formula for calculating IQ is: \[ \text{IQ} = \left( \frac{\text{Mental Age}}{\text{Chronological Age}} \right) \times 100 \]
Step 2: Calculating the IQ.
Using the given values, \[ \text{IQ} = \left( \frac{12}{10} \right) \times 100 = 1.2 \times 100 = 120 \]
Step 3: Final Answer.
Thus, the IQ of the child is 120.