A child of 16 years scores 75 in an IQ test, his mental age will be ________ years.
- A12
- B8
- C14
- D15
Solution & Step-by-step Explanation
The formula to calculate the Intelligence Quotient (IQ) is given by:
IQ=
Chronological Age (CA)
Mental Age (MA)
×100
Given:
Chronological Age (CA) = 16 years
IQ = 75
Substitute the values into the formula:
75=
16
MA
×100
75=
16
100×MA
MA=
100
75×16
MA=
100
1200
=12 years
Thus, the child's mental age is 12 years.
IQ=
Chronological Age (CA)
Mental Age (MA)
×100
Given:
Chronological Age (CA) = 16 years
IQ = 75
Substitute the values into the formula:
75=
16
MA
×100
75=
16
100×MA
MA=
100
75×16
MA=
100
1200
=12 years
Thus, the child's mental age is 12 years.