SOLUTION: a person's IQ is given by the formula IQ= (MA/CA)*100 where CA is chronological age. If 80 <= IQ <= 140 for a group of 12 years old children, find the range of their mental ages.

Question 1041383: a person's IQ is given by the formula IQ= (MA/CA)*100 where CA is chronological age. If 80 <= IQ <= 140 for a group of 12 years old children, find the range of their mental ages.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a person's IQ is given by the formula IQ= (MA/CA)*100 where CA is chronological age. If 80 <= IQ <= 140 for a group of 12 years old children, find the range of their mental ages.
------------------------
80 <= (MA/12)*100 <= 140
-------------------------------
Multiply by 12 along the line to get:
960 <= 100*MA <= 1680
-----
Divide by 100 along the line to get the answer::
9.6 <= MA <= 16.8
========================
Cheers,
Stan H.
-----------------
RELATED QUESTIONS
PSYCHOLOGY: A person�s IQ is given by the formula IQ =(MA/CA) 100 Where (answered by CubeyThePenguin)

A person's IQ is given by the formula IQ=MA100/CA Where MA is mental age and CA is... (answered by CubeyThePenguin)

Examine the intelligence quotient, or IQ, as it is defined by the formula:... (answered by stanbon)

A person's intelligence quotient (IQ) is determined by multiplying the quotient of his or (answered by stanbon)

One's intelligence quotient, or IQ, varies directly as a... (answered by Boreal)

One's intelligence quotient, or IQ, varies directly as a person's... (answered by josgarithmetic)

one's intelligence quotient, or IQ, varies directly as a person's mental age and... (answered by sudhanshu_kmr)

Psychology. The number of nonsense syllables that a person can repeat consecutively could (answered by stanbon)

Examine the intelligence quotient, or IQ, as it is defined by the formula:... (answered by stanbon)