Solve the application of linear equations.
Intelligence Quotient A person’s intelligence quotient (IQ) is found by multiplying the mental age by 100 and dividing by the chronological age.
(a) Jack is 7 years old. His IQ is 130. Find his mental age.
(b) If a person is 16 years old with a mental age of 20, what is the person’s IQ?
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