Demi is a 10-year-old with a mental age of 12.Demi's intelligence quotient (IQ)is
A) 100.
B) 120.
C) 110.
D) 83.

Question

Quizplus · Accepted Answer

Demi's mental age is 12, which is above the average mental age for a 10-year-old. To calculate her IQ, we divide her mental age (12) by her actual chronological age (10) and multiply by 100.

IQ = (mental age/chronological age) x 100
IQ = (12/10) x 100
IQ = 120

Therefore, her IQ is 120, which is above average.

Demi Is a 10-Year-Old with a Mental Age of 12