We appreciate your visit to Intelligence quotient IQ varies directly as a person s mental age and inversely as that person s chronological age Fifteen year old Erin has a. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
According to the given information, IQ varies directly with mental age and inversely with chronological age. Therefore, we can use the formula:
IQ = k * (mental age / chronological age)
where k is a constant of proportionality.
To find the value of k, we can use the information given about Erin. When Erin's mental age is 15 and her chronological age is 15, her IQ is 100. When these values are added to the formula, we obtain:
100 = k * (15/15)
Simplifying this equation, we get:
k = 100
Now we can use this value of k to find Simon's IQ. Simon's mental age is 24 and his chronological age is 20. When we enter these values into the formula, we obtain:
IQ = 100 * (24/20)
Simplifying this equation, we get:
IQ = 120
Therefore, Simon's IQ is 120.
Learn more about chronological age
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