Paulo has an IQ of 130 and is 10 years old. According to Stern's IQ formula, what is Paulo's mental age?
A)13
B)12
C)10
D)8
E)130

Question

Quizplus · Accepted Answer

Stern's IQ formula is IQ = (Mental Age / Chronological Age) * 100. Rearranging the formula to solve for Mental Age gives us Mental Age = (IQ * Chronological Age) / 100. Substituting Paulo's IQ (130) and Chronological Age (10) into the formula gives us (130 * 10) / 100 = 13.

Paulo Has an IQ of 130 and Is 10 Years