Elia5yhi3Shaomokepan Elia5yhi3Shaomokepan

21-11-2016
Mathematics

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One's intelligence quotient, or IQ, varies directly as a person's mental age and inversely as that person's chronological age. A person with the 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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Greenleafable Greenleafable

23-11-2016

(Mental Age /Chronological Age)(100)=IQ
(40/Chronological Age)=80
(40)(100)=80(Chronological Age)
(40)(100)/80=Chronological Age
50=Chronological Age

That is the formula for calculating what you needed.

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