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IQ of a person is given by the formula ...

IQ of a person is given by the formula `IQ = (MA)/(CA)xx100` where MA = mental age and CA = chronological age. If IQ for a group of 10 years children is given by the inequation `70 le IQ le 140`, find the range of their mental age.

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Here CA = 10 years
`:. IQ = (MA)/(CA) xx 100 = (MA)/(10) xx 100`
= 10 MA
Now` 70 le IQ le 140`
`70 le 10MA le 140`
`7 le MA le 14`.
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IQ of a person is given by formula: IQ =(MA)/(CA)xx100, where MA is mental age and CA is chronological age.If 80<=IQ<=140 for a group of 12 year children,find the range of their mental age.

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