The IQ (intelligence quotient) is found by dividing the mental age (MA), as indicated on standard tests, by the chronological age (CA) and multiplying by 100. For example, if a child has a mental age of 12 and a chronological age of 8, the calculated IQ is 150. If a 7-year-old girl has an IQ of 180, compute her mental age.

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter9: Systems Of Linear Equations
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The IQ (intelligence quotient) is found by dividing the mental age (MA), as indicated on standard tests, by the chronological age (CA) and multiplying by 100. For example, if a child has a mental age of 12 and a chronological age of 8, the
calculated IQ is 150. If a 7-year-old girl has an IQ of 180, compute her mental age.
Write the equation required to find the solution, using x to represent the chronological age of the girl.
(Use integers or fractions for any numbers in the equation. Do not simplify.)
Transcribed Image Text:The IQ (intelligence quotient) is found by dividing the mental age (MA), as indicated on standard tests, by the chronological age (CA) and multiplying by 100. For example, if a child has a mental age of 12 and a chronological age of 8, the calculated IQ is 150. If a 7-year-old girl has an IQ of 180, compute her mental age. Write the equation required to find the solution, using x to represent the chronological age of the girl. (Use integers or fractions for any numbers in the equation. Do not simplify.)
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