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Answer :
Final answer:
To calculate the mental age of a 10-year-old child with an IQ of 140, rearrange the IQ formula to mental age = (IQ \\u00d7 chronological age) \/ 100, yielding a mental age of 14 years. Therefore the correct answer is c) 14.
Explanation:
The question being asked relates to calculating a child's mental age based on their IQ score. The formula for calculating IQ is IQ = mental age \/ chronological age \\u00d7 100. If a 10-year-old child scores 140 on an IQ test, we can rearrange the formula to calculate the child's mental age: mental age = (IQ \\u00d7 chronological age) \/ 100. So, mental age = (140 \\u00d7 10) \/ 100 = 14. Therefore, the correct answer to what the child's mental age is would be 14 years.
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