IQ of a person is given by formula: IQ`=(M A)/(C A)xx100\ ,\ w h e r e\ M A` is mental age and CA is chronological age. If `80lt=I Qlt=140` for a group of 12 year children, find the range of their mental age.

IQ of a person is given by formula: IQ =(MA)/(CA)xx100, where MA is mental age and CA is chronological age.If 80<=IQ<=140 for a group of 12 year children,find the range of their mental age.

IQ of a person is given by the formula IQ=(MA)/(CA)xx100 where MA is mental age and CA is chronological age.If quad 80<=IQ<=140 for a group of 12 years old children,find the range of their mental age.

IQ of a person is given by the formula IQ = (MA)/(CA)xx100 where MA = mental age and CA = chronological age. If IQ for a group of 10 years children is given by the inequation 70 le IQ le 140 , find the range of their mental age.

IQ - (Mental age/Chronological age) xx 100 was propounded by