Ones intelligence quotient, or IQ, varies directly as a
Chapter 7, Problem 7.1.768(choose chapter or problem)
Ones intelligence quotient, or IQ, varies directly as a persons mental age and inversely as that persons chronological age. A person with a mental age of 25 and a chronological age of 20 has an IQ of 125. What is the chronological age of a person with a mental age of 40 and an IQ of 80?
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