A person with a mental age of 22 and a chronological age of 35 has an IQ of 132. What is the chronological age of a person with a mental age of 20 and an IQ of 140?

Answer 1

IQ = (MA/CA)*100 where MA is mental age and CA is chronological age.

140=20/CA *100

140/100=20/CA

1.4=20/CA



CA=20/1.4 =14.28