Answer :

Final answer:

Peter, a 10-year-old boy with a mental age of 9 years, would have an IQ of 90 according to the standard formula for calculating IQ.

Explanation:

To determine the IQ of Peter, a 10-year-old boy with a mental age of 9 years, we need to understand the formula used to derive IQ. The Intelligence Quotient, or IQ, is typically calculated as (mental age ÷ chronological age) × 100. In Peter's case, this would be calculated as follows: (9 ÷ 10) × 100 = 90. Therefore, Peter’s IQ would be 90, which corresponds to option A in your question.

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Thanks for taking the time to read Peter is a 10 year old boy who has a mental age of 9 years His IQ would be A 90 B 100 C 125. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

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