Answer :
To calculate the IQ using the original formula, you need to follow these steps:
1. Identify the actual age: For this problem, the child's actual age is 10 years.
2. Identify the mental age: The child's mental age is given as 8 years.
3. Use the IQ formula: The original formula for calculating IQ is:
[tex]\[
\text{IQ} = \left(\frac{\text{Mental Age}}{\text{Actual Age}}\right) \times 100
\][/tex]
4. Plug in the values:
- Mental Age = 8
- Actual Age = 10
Substitute these values into the formula:
[tex]\[
\text{IQ} = \left(\frac{8}{10}\right) \times 100
\][/tex]
5. Calculate the result:
- First, calculate [tex]\( \frac{8}{10} = 0.8 \)[/tex].
- Next, multiply 0.8 by 100 to get the IQ: [tex]\( 0.8 \times 100 = 80 \)[/tex].
Therefore, the IQ of the 10-year-old child with a mental age of 8 years is 80.
1. Identify the actual age: For this problem, the child's actual age is 10 years.
2. Identify the mental age: The child's mental age is given as 8 years.
3. Use the IQ formula: The original formula for calculating IQ is:
[tex]\[
\text{IQ} = \left(\frac{\text{Mental Age}}{\text{Actual Age}}\right) \times 100
\][/tex]
4. Plug in the values:
- Mental Age = 8
- Actual Age = 10
Substitute these values into the formula:
[tex]\[
\text{IQ} = \left(\frac{8}{10}\right) \times 100
\][/tex]
5. Calculate the result:
- First, calculate [tex]\( \frac{8}{10} = 0.8 \)[/tex].
- Next, multiply 0.8 by 100 to get the IQ: [tex]\( 0.8 \times 100 = 80 \)[/tex].
Therefore, the IQ of the 10-year-old child with a mental age of 8 years is 80.
