Question

IQ of a person is given by the formula IQ=MA/CA*100.Where MA means mental age and CA means chronological age. If 80<_x<_140 for a group of 12 year old children, find the range of their mental age
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Answer 1

Given that group of 12 years old children.

For a group of 12 years old children, CA =12 years

Putting the value of IQ, we obtain

Thus, the range of mental age of the group of 12 years old children is