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.
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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.
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80 <= (MA/12)*100 <= 140
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Multiply by 12 along the line to get:
960 <= 100*MA <= 1680
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Divide by 100 along the line to get the answer::
9.6 <= MA <= 16.8
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Cheers,
Stan H.
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