Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • IQ of a person is given by the formula IQ = MA/CA x 100 where MA is mental age and CA is chronological age. If 80 less than or equal to IQ less than or equal to 140 for a group of 12 years old children, find the range of their mental age.

Q14.    IQ of a person is given by the formula

                IQ= \frac{MA}{CA}\times 100

where MA is mental age and CA is chronological age. If 80\leq IQ\leq140 for a group of 12 years old children, find the range of their mental age.

Answers (1)

best_answer

Given that group of 12 years old children.

80\leq IQ\leq140

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

IQ= \frac{MA}{CA}\times 100

Putting the value of IQ, we obtain 

80\leq IQ\leq140

\Rightarrow \, \, 80\leq \frac{MA}{CA}\times 100\leq140

\Rightarrow \, \, 80\leq \frac{MA}{12}\times 100\leq140

\Rightarrow \, \, 80\times 12\leq MA\times 100\leq140\times 12

\Rightarrow \, \, \frac{80\times 12}{100}\leq MA\leq \frac{140\times 12}{100}

\Rightarrow \, \, 9.6\leq MA\leq 16.8

Thus, the range of mental age of the group  of 12 years old children is \, \, 9.6\leq MA\leq 16.8

 

 

 

 

Posted by

seema garhwal

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

PM Modi's Pariksha Pe Charcha 2025 to be held next month, registrations open till January 14
anam-khan

CBSE Board Exams 2025: Online portal for availing exemptions by CWSN students opens
anam-khan

Board Exams: States agree to equivalence; no question paper ‘jumbling’ from next year, says PARAKH CEO

Latest Question